が
 
っ
 
し
 
り

adverb, adverb taking the と particle, takes する

Onomatopoeic or mimetic word.
  1. firmly, solidly, sturdily, strongly, toughly.

Variations

Pronunciation Kanji Kana Is Common
 
が
 
っ
 
し
 
り
がっしり ✔