パタッと

adverb

with a light thud; with a flop; with a light clap

Describes a light, soft impact or sound, such as something falling flat, a book closing, or a gentle clap.

• 本ほんがパタッと床ゆかに落おちた。

  The book fell onto the floor with a light thud.

• 彼かれは手てをパタッと合あわせた。

  He brought his hands together with a light clap.

adverb

suddenly stop; come to an abrupt end

Used for actions or states that cease abruptly, often with a sense of finality or unexpectedness.

• 雨あめがパタッとやんだ。

  The rain suddenly stopped.

• 彼かれからの連れん絡らくがパタッと途と絶だえた。

  Contact from him suddenly ceased.