na-adjective, noun which may take the genitive case particle 'no', noun
smoothly; easily; without a hitch
Describes things progressing quickly and smoothly, often with a sense of good momentum. Frequently used adverbially as 〜に.
See also: とんとん
話がトントン拍子に進んで、契約まであっという間だった。
The talks progressed smoothly, and we reached a contract in no time.
My job hunting went without a hitch, and I got an offer right away.