し
 
っ
 
か
 
り

adverb, adverb taking the と particle, takes する

Usually written with kana alone, onomatopoeic or mimetic word.
  1. tightly (holding on), firmly, securely.
  2. strongly (built), solidly, sturdily, steadily.
  3. properly, well, sufficiently, hard (working, etc.), fully, completely.
  4. reliably, dependably, levelheadedly, shrewdly, wisely, cleverly.

Variations

Pronunciation Kanji Kana Is Common
 
し
 
っ
 
か
 
り
しっかり ✔
しっか
確
 
り
確り しっかり
しっか
聢
 
り
聢り しっかり