がんがん

がんがん
adverb
pounding; throbbing; vigorously
1. pounding; throbbing
Describes a pounding sensation, especially headaches or loud repetitive sounds.
(あたま)ががんがんする。
My head is pounding.
(となり)部屋(へや)からがんがん音楽(おんがく)()こえる。
Loud music is blaring from the next room.
二日酔(ふつかよ)いで(あたま)ががんがんする。
My head is pounding from a hangover.
2. vigorously; intensively
Describes doing something with great intensity or energy.
がんがん勉強(べんきょう)して試験(しけん)()かった。
I studied intensively and passed the exam.
エアコンをがんがんつけている。
The air conditioner is running full blast.
がんがん()べてすぐ(ふと)った。
I ate a lot and gained weight quickly.

がんがん is an onomatopoeia (擬音語(ぎおんご)) that mimics a pounding or banging sound. It has two main uses: describing pounding sensations and describing doing things with great intensity.

SENSE 1 — POUNDING/THROBBING:

  • (あたま)ががんがんする: my head is pounding (especially with hangovers)
  • がんがん()る: to ring/pound loudly
  • がんがん音楽(おんがく)()こえる: loud music is blaring

SENSE 2 — VIGOROUSLY/INTENSELY:

  • がんがん勉強(べんきょう)する: to study hard/intensively
  • がんがん()べる: to eat a lot (energetically)
  • がんがん(はたら)く: to work hard
  • エアコンをがんがんつける: to blast the AC

SIMILAR PAIN WORDS:

  • ずきずき: throbbing pain (rhythmic, like a pulse)
  • きりきり: sharp, piercing pain (stomach)
  • がんがん: heavy pounding (typically headaches)

REGISTER:
Casual/informal. Common in everyday conversation.