がつんと言う (がつんという) Japanese meaning | KotomoraMeanings
1
expression, godan verb (-u)
tell someone off emphatically; give someone a piece of one's mind
Used when scolding or reprimanding someone directly and forcefully. The がつんと part is onomatopoeic for a sharp, impactful action.
を
する
と
すぐ
がつん
と
言
う
。
That boss immediately tells off his subordinates when they make a mistake.