Adverb (fukushi), Adverb taking the 'to' particle
boisterously; roughly; briskly
Onomatopoeic or mimetic word
母はため息をつきながら、高校一年生にもなった息子の頭をがしがしと撫でた。Mom sighed, and tousled the hair of her first-year high school son's head.
Also written がしがし
Adverb (fukushi), Adverb taking the 'to' particle
boisterously; roughly; briskly
Onomatopoeic or mimetic word
Also written がしがし