| 1 | Middle English | tit | — |
| 2 | Old English | tit | — |
| 3 | Old English | titt | tit, teat, breast; nipple |
| 4 | Proto-Germanic | titt- | teat; nipple; breast |
| 5 | Proto-Indo-European | tata- | father; parent; nipple |
| 6 | Sanskrit | तथा | in that manner |
| 7 | Sanskrit | यथा | in which manner or way, according as, as, like |
| 8 | Proto-Indo-Iranian | HyátʰaH | in which way, as, in which manner |
| 9 | Proto-Indo-European | yós | that, who, which |
| 10 | Proto-Finnic | wiša | — |
| 11 | Proto-Indo-Iranian | wišás | poison, venom |
| 12 | Proto-Indo-European | wisós | fluidity, slime, poison; poison; poison; slime;... |