う
 
っ
 
か
 
り

adverb, adverb taking the と particle, takes する

Onomatopoeic or mimetic word.
  1. carelessly, thoughtlessly, inadvertently.

Variations

Pronunciation Kanji Kana Is Common
 
う
 
っ
 
か
 
り
うっかり ✔
 
ウ
 
ッ
 
カ
 
リ
ウッカリ