didin- 1, tetik 3

1 to strive, exert 2 bold, hero 3 clever, reasonable 4 cheerful, vigorous

Proto-Turkic: *det-
Altaic etymology: Altaic etymology
Proto-Altaic: *tḕtu
Russian meaning: 1 стараться, напрягать силы, сопротивляться 2 смелый, герой 3 умный, разумный, ловкий 4 бодрый
Turkic: *det-
Mongolian: *čida-
Tungus-Manchu: *dēdu-
Japanese: *tùtù-
Comments: VEWT 476, EDT 450, 455, 456, ЭСТЯ 3, 218. Cf. perhaps also Kaz. etc. tetik "device, mechanism", Tat., Bashk. täte '(gun's) cock', Gag. tetik 'id.; virgin's hymen', KKalp. tetik 'mechanism, essence', Az. tätig 'trigger'. Some forms reveal secondary assimilatory devoicing.
Old Turkic: tetik (OUygh.) 3
Karakhanid: tet-, tetin- (MK) 1, tetik, teti-l- 'to become clever' (MK)
Turkish: didin- 1, tetik 3
Tatar: täti 'good' (nursery word)
Middle Turkic: tetik (Abush., Sangl.) 3
Uzbek: tetik 4
Uighur: tetik 4
Turkmen: tetǟrik 'support, help' (?)
Khakassian: tǝtǝn- 1
Oyrat: tidim 2, tedü 'satisfied, sorrowless'
Yakut: tetiänex 4
Tuva: didin- 1, didim 2
Tofalar: titim 2
Kirghiz: tetik 3
Bashkir: tätäj 'good thing' (nursery word)
Gagauz: didin- 1
Kumyk: tetek 'pleasure'