Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun thwack

1 sense of thwack

Sense 1
thwack -- (a hard blow with a flat object)
       => blow -- (a powerful stroke with the fist or a weapon; "a blow on the head")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb thwack

1 sense of thwack

Sense 1
smack, thwack -- (deliver a hard blow to; "The teacher smacked the student who had misbehaved")
       => hit -- (deal a blow to, either with the hand or with an instrument; "He hit her hard in the face")