Where does “утоми́ть” come from?

утоми́ть (Russian) comes from Russian томи́ть, from Old East Slavic томити, from Proto-Slavic tomiti, from Proto-Indo-European tēmH-.

Ancestry of “утоми́ть”, step by step

Step	Language	Word	Meaning
1	Russian	томи́ть	—
2	Old East Slavic	томити	—
3	Proto-Slavic	tomiti	—
4	Proto-Indo-European	tēmH-	—

утоми́ть — Etymology, Origin & Word History | Etymology Explorer