てっきり

て

っ

き

り

Common wordJLPTN2Freq.FrequencyTop 10,000

Meanings

Used when the speaker was convinced of something that later turned out to be wrong. Often followed by expressions of surprise or disappointment, such as 〜と思った or 〜のに.

てっきり彼かれが来くると思おもっていたのに、来こなかった。
I was sure he would come, but he didn't.
てっきり今日きょうは休やすみだと思おもって、寝ね坊ぼうしてしまった。
I was certain today was a day off, so I overslept.

See all 5 example sentences ›

Usage patterns

てっきり〈事こと〉だと思おもっていたto have been sure that ~ (but be mistaken)
彼かれはてっきり出しゅっ張ちょうだと思おもっていたが、実じつは休きゅう暇かだった。
I was sure he was on a business trip, but actually he was on vacation.
てっきり〈事こと〉だと思おもったらhaving been certain of something, only to find out otherwise
てっきり雨あめだと思おもったら、晴はれていた。
I was certain it would rain, but it turned out to be sunny.