ガンガン
gangan

To-Adverb

1. clanging; banging; booming; loudly

Onomatopoeia
まだ あたまはがんがんするけど ねつはもうないよ。
mada atamawa gangan surukedo netsuwa mō naiyo.
My head's still pounding but I don't have a temperature any more.
Suru Verb
To-Adverb

2. throbbing (headache); pounding; splitting

Onomatopoeia
To-Adverb

3. fully; vigorously; hard (e.g. working); flat out

Colloquial
Onomatopoeia
Other forms: