N2 — outside your level filter

Modifies the end of the sentence directly and takes no だ／です, so there are no forms to conjugate.

つい

tsuiunintentionally, before one knows itN2adverb

Example sentences2

疲つかれていたので、つい大おおきな声こえを出だしてしまった。

tsukarete ita node, tsui ookina koe o dashite shimatta.

I was tired, so I ended up raising my voice without meaning to. neutral

つい食たべすぎちゃった。

tsui tabesugichatta.

I ended up eating too much before I knew it. casual