カチッと
kachi' to

Adverb

1. with a click; with a clink; with a snap

Onomatopoeia
部屋 へや かりのスイッチをカチッとつけた。
heyano akarino suicchio kachitto tsuketa.
He flipped the switch and threw the room into brightness.
Adverb
Suru Verb

2. firmly; tightly; compactly; precisely

Onomatopoeia
Other forms: