ぐんぐん
Meanings
Adverb
Adverb taking と
1. rapidly; vigorously; by leaps and bounds; steadily (Onomatopoeia)
Examples2
勉強 の 成果 が 出て、 成績 が ぐんぐん 伸びた。
His efforts in studying have paid off and his grades are improving by leaps and bounds.
トム の フランス語 は ぐんぐん 上達 している。
Tom's French is steadily getting better.