Click here to see the entire vocabulary list
Rōmaji
tekkiri … to omotta
Type
expression
Meaning
I undoubtedly thought that … (but it turned out to be wrong)
Additional Info
It is used when what you believed or guessed turns out to be completely wrong
Example
花子と太郎ってただの友達？めっちゃ仲がいいから、てっきり付き合っているのかと思っていたよ
Hanako and Taro are just friends? Because they are very close, I completely thought that they would be dating.