also: ぐびりぐびり
adverb, adverb taking the 'to' particle
gulping loudly; chugging
Mimetic adverb describing the sound and action of drinking alcohol in large, audible gulps. Often used with 飲む.
彼はビールをグビグビ飲んだ。
He chugged the beer loudly.
暑い日は冷たい水をグビグビ飲みたくなる。
On a hot day, I feel like gulping down cold water.
ゴクゴク is a more general gulping sound for any beverage, while グビグビ emphasizes louder, more vigorous gulps, especially of alcohol.
Onomatopoeic word mimicking the sound of loud gulping. The exact origin is uncertain.