| Arabic | bay | word, term |
| Slavic(a.litt.) | bajati | to speak, say |
| Pol. | bajaç | to chatter |
| Pol. | baigjel | Icterine Warbler, 381 |
| Germ.reg. | beibei, boiboi | domestic duck, 40 |
| Roman. | boi! | exclamation |
| Engl. | boy! | exclamation of wonder, approval etc. (no kin to boy male child) |
| Franç.(a.litt.) | baier, abaier | to bark |
| Engl. | bay | to bark |
| Franç. | aboyer | to bark |
| Franç.: Montb. | ébouai | chasser les poules, FEW 22: 15 |
| Franç.: Sol. | abager | disperser les poules, FEW 22: 15 |
| Ital. | abbajara | to bark |
| Ital.reg. | baiante, bagiante | Great Crested Grebe, 66 |
| Ital.: Brescia | baia | to call (Fieldfare, 341) |
| Ital.reg. | gardena bajaröla | Fieldfare, 341 |
| Ital.reg. | gaza bajaröla | Red-backed Shrike, 326 |
| Ital.: Trent. | bajarèl | chiaccherino |
| Ital.nord | bajarola | Whitethroat, 362 |
| Ital.: Trent. | bajarelòn | Great Reed Warbler, 373 |
| R.Rom. | bagliafar, sbajafar | to chatter |
| Gallego | abaiar | to breathe with difficulty |
| Gallego | baiona | Barn Owl, 238 |
| Lith. | bajanas | accordion |