| Language | Reflex(es) | Gloss | Grammar | Sources |
|---|
| Celtic |
| Old Irish | bolach | to boil | vb | GED LRC |
| Irish | bost | boast | n | CDC LRC |
| Irish | púca | puck, imp, sprite | n | LRC |
| Gaelic | bost | boast | n | CDC LRC |
| Cornish | bost | boast | n | CDC LRC |
| Welsh | bost | boast | n | CDC LRC |
| Welsh | pwca | puck, goblin | n | ASD LRC |
| English |
| Old English | bēost, bȳst(ing) | beasting(s) | n.masc | W7 ASD LRC |
| Old English | bīle, bȳl(e) | boil, bump | n.masc | ASD GED LRC |
| Old English | būc | jug, bucket, pitcher; belly, stomach | n.masc | IEW ASD LRC |
| Old English | budda | dung-beetle | n | IEW LRC |
| Old English | ge-pōs | pose | n.neut | ASD LRC |
| Old English | pocc | pock | n.masc | W7 ASD LRC |
| Old English | pocca | bag, pocket | n.masc | W7 ASD LRC |
| Old English | pos | pose | n | IEW LRC |
| Old English | pūca, pūcel | puck, goblin | n.masc | W7 ASD LRC |
| Old English | pudd | ditch, furrow, puddle | n.masc | W7 ASD LRC |
| Old English | pyffan | to puff | vb | W7 LRC |
| Middle English | be(e)stynge, bestninge | beasting(s) | n | W7 CDC LRC |
| Middle English | big(ge), byg(ge) | big, strong, lusty | adj | IEW MEV CDC LRC |
| Middle English | biging | dwelling | n | MEV LRC |
| Middle English | bile | boil | n | W7 LRC |
| Middle English | bill(e) | bill | n | W7 CDC LRC |
| Middle English | billette | billet | n | CDC LRC |
| Middle English | bocle | buckle | n | W7 LRC |
| Middle English | boilen, boylen | to boil | vb | W7 CDC LRC |
| Middle English | boost(e), bost(e) | boast; pride, arrogance | n | W7 MEV CDC LRC |
| Middle English | boule, bowle | bowl | n | W7 CDC LRC |
| Middle English | bucket | bucket | n | W7 LRC |
| Middle English | budde | bud; beetle | n | IEW LRC |
| Middle English | budden | to bud | vb | IEW LRC |
| Middle English | bugge | bug, beetle | n | IEW LRC |
| Middle English | bullace | bolas | n.pl | CDC LRC |
| Middle English | bulle | bull | n | W7 LRC |
| Middle English | bullion | bullion | n | W7 LRC |
| Middle English | byle | boil | n | CDC LRC |
| Middle English | bylet | billet | n | W7 LRC |
| Middle English | parboilen | to boil thoroughly | vb | W7 LRC |
| Middle English | pochen | to poach | vb | W7 LRC |
| Middle English | podel | puddle | n | IEW LRC |
| Middle English | poke | poke | n | W7 LRC |
| Middle English | poket | pocket | n | W7 LRC |
| Middle English | pokke | pock | n | W7 LRC |
| Middle English | pouche | pouch | n | W7 LRC |
| Middle English | pouten | to pout | vb | W7 LRC |
| Middle English | puffen | to puff | vb | W7 LRC |
| Middle English | puke | puck | n | W7 LRC |
| Middle English | trebochet | trebuchet | n | W7 LRC |
| English | beastings, biestings | colostrum (esp. of cow) | n.pl | IEW W7 LRC |
| English | big | thick, large, of great size/force | adj | IEW LRC |
| English | bill | written document | n | AHD W7 LRC |
| English | billet | note, brief letter | n | AHD W7 LRC |
| English | billet-doux | love letter | n | AHD W7 LRC |
| English | boast | brag, act of boasting | n | AHD W7 LRC |
| English | bocaccio | large rockfish | n | AHD W7 LRC |
| English | boil | localized swelling due to skin gland infection | n | AHD W7 LRC |
| English | boil | to generate vapor bubbles when heated | vb | AHD W7 LRC |
| English | bola | stone/iron balls bound to cords (used as weapon) | n | AHD W7 LRC |
| English | boucle | uneven 3-ply yarn with loops at intervals | n | AHD W7 LRC |
| English | bouillabaisse | highly seasoned fish stew | n | AHD W7 LRC |
| English | bouillon | clear seasoned soup made of lean meat | n | AHD W7 LRC |
| English | boule | pear-shaped mass of synthetic sapphire | n | AHD W7 LRC |
| English | bouleversement | reversal | n | AHD LRC |
| English | bowl | ball used in bowling | n | AHD W7 LRC |
| English | bubo | inflammatory swelling of lymph gland | n | AHD W7 LRC |
| English | buccal | relating to the oral cavity | adj | AHD W7 LRC |
| English | buckboard | sprung-seated four-wheeled vehicle | n | AHD W7 LRC |
| English | bucket | round vessel for solids/liquids | n | IEW W7 LRC |
| English | buckle | catch, fastener | n | AHD W7 LRC |
| English | Bucklebury | hobbit town in Tolkien: The Lord of the Rings | prop.n | LRC |
| English | bud | undeveloped plant shoot | n | IEW W7 LRC |
| English | bud | to burgeon, come out, commence growth | vb | IEW W7 LRC |
| English | budge | to shift, move | vb | AHD W7 LRC |
| English | bug | insect | n | IEW LRC |
| English | bull | solemn papal letter sealed by bulla | n | AHD W7 LRC |
| English | bulla | round lead seal attached to papal bull | n | AHD W7 LRC |
| English | bullate | re: puckered/blistered appearance | adj | AHD LRC |
| English | bullet | small round mass | n | AHD W7 LRC |
| English | bulletin | brief authoritative public notice | n | AHD W7 LRC |
| English | bullion | gold/silver considered as metal | n | AHD W7 LRC |
| English | bully | canned/pickled beef | n | AHD LRC |
| English | debouch | to march out (from defile) onto open ground | vb | AHD W7 LRC |
| English | disembogue | to flow as if from channel | vb | AHD W7 LRC |
| English | ebullience | exuberance, lively/enthusiastic expression | n | AHD W7 LRC |
| English | embouchure | lip position on wind instrument | n | AHD W7 LRC |
| English | garboil | turmoil, confusion | n | AHD W7 LRC |
| English | parboil | to boil briefly as a preliminary | vb.trans | AHD W7 LRC |
| English | poach | to cook in liquid just below boiling point | vb.trans | AHD W7 LRC |
| English | pock | pustule in eruptive disease (e.g. smallpox) | n | AHD W7 LRC |
| English | pocket | purse, small bag in clothing | n | AHD W7 LRC |
| English | poke | sack, bag | n | AHD W7 LRC |
| English | pose | catarrh, head-cold | n | IEW OED LRC |
| English | pouch | small drawstring bag | n | AHD W7 LRC |
| English | pout | to show displeasure via sullen expression | vb | AHD W7 LRC |
| English | puck | demon, evil spirit | n | W7 LRC |
| English | pucker | to gather into small folds/wrinkles | vb | AHD LRC |
| English | puckish | impish, whimsical | adj | W7 LRC |
| English | puddle | small pool of dirty/muddy water | n | IEW W7 LRC |
| English | puff | to blow in short gust | vb | AHD W7 LRC |
| English | Púkel-men | Wose-like statues in Tolkien: The Lord of the Rings | prop.n.pl | LRC |
| English | trebuchet | medieval military engine for heaving missiles | n | AHD W7 LRC |
| Scots English | böl | bowl | n | CDC LRC |
| West Germanic |
| Old Frisian | bēl, beil | boil, bump | n.fem | GED ASD LRC |
| Old Frisian | būlen | to boil, swell | vb | GED LRC |
| Middle Dutch | bule | boil | n | CDC LRC |
| Middle Dutch | buylen | to boil, swell | vb | GED LRC |
| Middle Dutch | pocke | pock | n | W7 LRC |
| Dutch | buik | belly | n | TLL LRC |
| Dutch | buil | boil | n.fem | ASD LRC |
| Middle Low German | bǖle | boil, bump | n.fem | GED LRC |
| Low German | bule, büle | boil | n | CDC LRC |
| Low German | pudel | puddle | n | W7 LRC |
| Old High German | būlia | boil, bump | n.fem | GED LRC |
| Old High German | pūlla | boil, bump | n.fem | GED LRC |
| Middle High German | biule | boil, bump | n.fem | GED LRC |
| German | Bauch | belly, stomach | n.masc | TLL LRC |
| German | Beule | boil | n.fem | ASD LRC |
| German | beulen | to bulge | vb | LRC |
| German | Puffen | puffing sound | n.neut | LRC |
| German | puffen | to puff, chuff | vb | LRC |
| North Germanic |
| Old Norse | beyla | boil | n.fem | ASD LRC |
| Old Norse | pūki | puck, devil | n | W7 LRC |
| Old Icelandic | Beyla | Freyja's servant | prop.n | GED LRC |
| Old Icelandic | bōla | blain, shield boss | n.fem | GED LRC |
| Icelandic | beyla | boil | n | CDC LRC |
| Icelandic | bōla | blain, blister | n | CDC LRC |
| Icelandic | púki | puck, imp, devil | n | ASD LRC |
| Norwegian | bolen | swollen | vb.past.ptc | GED LRC |
| Norwegian | bōla | boil, bump | n | GED LRC |
| Danish | bug | belly | n | TLL LRC |
| Danish | bu(g)le | boil | n.masc | ASD CDC LRC |
| Danish | byld | blain, blister | n | CDC LRC |
| Danish | pokker | puck, deuce, devil | n | ASD LRC |
| Old Swedish | bolin | swollen | vb.past.ptc | GED LRC |
| Swedish | buk | belly | n | TLL LRC |
| Swedish | bula | boil | n.fem | ASD LRC |
| Swedish | böld | blain, blister | n | CDC LRC |
| East Germanic |
| Gothic | *uf-bauljan | to inflate | vb.wk.I | GED LRC |
| Italic |
| Latin | bucca | cheek, mouth | n.fem | W7 LRC |
| Latin | buccula | little cheek/mouth | n.fem.dim | W7 LRC |
| Latin | bulla | bubble, amulet | n.fem | W7 LRC |
| Latin | bullio, bullire | to boil, bubble | vb | W7 LRC |
| Latin | bullo, bullare | to boil, bubble | vb | CDC LRC |
| Vulgar Latin | *bilia | log | n | AHD LRC |
| Vulgar Latin | bullico, bullicare | to boil | vb | W7 LRC |
| Late Latin | perbullio, perbullīre | to boil | vb | W7 LRC |
| Middle Latin | billeta | billet | n.dim | CDC LRC |
| Medieval Latin | billa | bill | n.fem | W7 LRC |
| Medieval Latin | bubo, bubonis | pustule | n.masc | W7 LRC |
| Medieval Latin | bulla | bulla, document seal | n | AHD LRC |
| New Latin | bulla | bulla, bubble | n.fem | W7 LRC |
| Portuguese | bola | bowl | n | CDC LRC |
| Portuguese | bulir | to boil, move, stir, be active | vb | CDC LRC |
| Spanish | boca | mouth | n.fem | W7 LRC |
| Spanish | bocacha | mouth | n.fem | W7 LRC |
| Spanish | bola | ball, bowl | n.fem | W7 LRC |
| Spanish | bullir | to boil | vb | CDC LRC |
| Spanish | desembocar | to vomit | vb | W7 LRC |
| Spanish | embocar | to put into the mouth | vb | W7 LRC |
| Old French | billette | billet, official register | n | AHD LRC |
| Old French | boillir | to boil | vb | W7 LRC |
| Old French | boillon | broth | n.masc | W7 LRC |
| Old French | boule | bowl | n | CDC LRC |
| Old French | bulle | document | n | AHD LRC |
| Old French | pochier | to pocket, put into a bag | vb | W7 LRC |
| Old North French | pokete | small bag | n.fem.dim | W7 LRC |
| Anglo-French | bille | bill | n | CDC LRC |
| Anglo-French | billette | billet | n | CDC LRC |
| Anglo-French | buket | bucket, pitcher | n | W7 LRC |
| Anglo-French | bullion | mint | n.masc | W7 LRC |
| Middle French | billette | log | n.fem.dim | W7 LRC |
| Middle French | bocle | buckle, shield boss | n.fem | W7 LRC |
| Middle French | bouger | to move, budge | vb | W7 LRC |
| Middle French | boule | ball | n.fem | W7 LRC |
| Middle French | boulet | missile | n.masc | W7 LRC |
| Middle French | boulette | small ball | n.fem.dim | W7 LRC |
| Middle French | bulle | document | n.fem | W7 LRC |
| Middle French | garbouil | garboil | n.masc | W7 LRC |
| Middle French | parboillir | to parboil | vb | W7 LRC |
| Middle French | pocher | to poach; put into a bag | vb | W7 LRC |
| Middle French | trébuchet | trebuchet | n.masc | W7 LRC |
| French | billet(te) | billet | n | CDC LRC |
| French | bouche | mouth | n.fem | W7 LRC |
| French | boucle | curl, buckle | n.fem | W7 LRC |
| French | bouclé | curly | adj | W7 LRC |
| French | boucler | to curl, fasten (e.g. belt buckle) | vb | W7 LRC |
| French | bouillabaisse | bouillabaisse | n | W7 LRC |
| French | bouillir | to boil | vb | CDC LRC |
| French | bouillon | broth, bouillon | n.masc | W7 LRC |
| French | boule | ball, bowl | n.fem | W7 LRC |
| French | bouleversement | bouleversement | n | W7 LRC |
| French | bulletin | report, bulletin | n.masc | W7 LRC |
| French | déboucher | to unplug | vb | W7 LRC |
| French | embouchure | embouchure | n.fem | W7 LRC |
| Old Occitan | bola | bowl | n | CDC LRC |
| Provençal | bulhir, buillir | to boil | vb | CDC LRC |
| Italian | boccaccia | large ugly mouth | n.fem | CDC LRC |
| Italian | bolla, bulla | bowl | n | CDC LRC |
| Italian | bollire | to boil | vb | CDC LRC |
| Italian | bulla | papal edict | n.fem | W7 LRC |
| Italian | bullettino | little bulletin | n.masc.dim | W7 LRC |
| Balto-Slavic |
| Lithuanian | bulìs | buttock | n | GED LRC |
| Slovenian | búliti | to swell | vb | GED LRC |
| Hellenic |
| Greek | boubōn | groin | n.masc | W7 LRC |
| Armenian |
| Armenian | boil | herd, multitude | n | GED LRC |
| Indo-Iranian |
| Sanskrit | buriṣ | buttock | n | GED LRC |