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Definition 2024

качну́ть • ‎(kačnútʹ) pf ‎(imperfective кача́ть)

to rock, swing, shake, wobble; dandle (once)

качну́ть колыбе́ль‎ ― kačnútʹ kolybélʹ ― to rock the cradle (once)

качну́ть голово́й‎ ― kačnútʹ golovój ― to shake one's head (once)
to pump (once)
(transitive or impersonal) to toss, roll, pitch (once)
ло́дку качну́ло‎ ― lódku kačnúlo ― the boat tossed / rolled (once)
(colloquial) to lift up, chair (to toss someone up, like a group of fans their champion)
(colloquial) to train/pump muscle (once)

Conjugation of качну́ть (class 3b perfective transitive)

Note: for declension of participles, see their entries. Adverbial participles are indeclinable.
perfective aspect
infinitive	качну́ть kačnútʹ
participles	present tense	past tense
active	—	качну́вший kačnúvšij
passive	—	ка́чнутый káčnutyj
adverbial	—	качну́в kačnúv, качну́вши kačnúvši
	present tense	future tense
1st singular (я)	—	качну́ kačnú
2nd singular (ты)	—	качнёшь kačnjóšʹ
3rd singular (он/она́/оно́)	—	качнёт kačnjót
1st plural (мы)	—	качнём kačnjóm
2nd plural (вы)	—	качнёте kačnjóte
3rd plural (они́)	—	качну́т kačnút
imperative	singular	plural
	качни́ kační	качни́те kačníte
past tense	singular	plural (мы/вы/они́)
masculine (я/ты/он)	качну́л kačnúl	качну́ли kačnúli
feminine (я/ты/она́)	качну́ла kačnúla
neuter (оно́)	качну́ло kačnúlo