| Language | Reflex(es) | Gloss | Grammar | Sources |
|---|
| Celtic |
| Old Irish | ad- | at, to | vb.pfx | GED LRC |
| Old Irish | ad-āgor | I fear | vb.1.sg | GED LRC |
| Old Irish | ad-cin | to gaze at | vb | GED LRC |
| Old Welsh | ad | to | prep | GED LRC |
| English |
| Old English | æt | at, to | prep | GED LRC |
| Middle English | ad- | toward, in the direction of | pfx | W7 LRC |
| Middle English | ado | lit. to do | n | W7 LRC |
| Middle English | at, att(e), et | at | prep | W7 LRC |
| English | ad- | toward, in the direction of | pfx | AHD W7 LRC |
| English | -ad | to, towards, near | sfx | AHD W7 LRC |
| English | ado | bustle, trouble | n | AHD W7 LRC |
| English | amount | aggregate, total number/quantity | n | W7 LRC |
| English | amount | to add up | vb.intrans | AHD W7 LRC |
| English | at | by, near, beside | prep | AHD W7 LRC |
| English | paramount | of chief concern/importance | adj | AHD LRC |
| West Germanic |
| Old Frisian | at, et, it | at, to | prep | GED ASD LRC |
| Old Saxon | at | at, to | prep | GED LRC |
| Old Saxon | t-ōgian | to show | vb.wk | GED LRC |
| Old High German | az | at, to | prep | GED LRC |
| Old High German | z-agēn | to hesitate | vb.wk | GED LRC |
| Old High German | z-ougen | to show | vb.wk | GED LRC |
| North Germanic |
| Old Norse | at | that | conj | LRC |
| Old Norse | at | at, in, to, for; until | prep | LRC |
| Old Icelandic | at | at, to | prep | GED LRC |
| Icelandic | at | at | prep | CDC LRC |
| Danish | ad | at | prep | CDC LRC |
| Swedish | åt | at | prep | CDC LRC |
| East Germanic |
| Gothic | at | at, to, from | prep | GED LRC |
| Gothic | atáugjan | to show, appear | vb.wk.I | GED LRC |
| Italic |
| Latin | ac | and | conj | LRC |
| Latin | ad- | towards | pfx | W7 LRC |
| Latin | ad | at, to, towards | prep | GED LRC |
| Latin | atque | and | conj | LRC |
| Portuguese | a | at, to | prep | CDC LRC |
| Spanish | á | at, to | prep | CDC LRC |
| Old French | ad- | at, towards | pfx | W7 LRC |
| Middle French | ad- | at, towards | pfx | W7 LRC |
| French | à | at, to | prep | CDC LRC |
| Italian | a | at, to | prep | CDC LRC |
| Hellenic |
| Greek | δεικνύναι | to show | vb | GED LRC |
| Indo-Iranian |
| Sanskrit | ādhi | on, unto | prep | CDC LRC |