adverb, adverb taking the 'to' particle
tap-tap; knock-knock; with a tapping sound
Mimetic word for a light tapping or knocking sound, often repeated. Used adverbially with と.
誰かがドアをとんとんとノックした。
Someone knocked tap-tap on the door.
adverb, adverb taking the 'to' particle
smoothly; without a hitch; swimmingly
Describes things proceeding smoothly, without obstacles or delays. Often used with verbs like 進む or 運ぶ.
交渉はとんとん拍子に進んだ。
The negotiations proceeded smoothly.
na-adjective
Used as a na-adjective to describe a state of being even, balanced, or break-even, especially in financial or competitive contexts.
今月の収支はとんとんだ。
This month's income and expenses are break-even.