ガバガバ

noun which may take the genitive case particle 'no', na-adjective

oversized; baggy

Describes clothing that is too large and loose, often with a negative or comical nuance.

• このコートはガバガバで、全ぜん然ぜん体からだに合あわない。

  This coat is so oversized it doesn't fit me at all.

adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'

rolling in money; profiting greatly

Used adverbially with verbs like 儲ける (to profit) to indicate making a lot of money easily or in large amounts.

• あの会かい社しゃは新しん製せい品ひんでガバガバ儲もうけているらしい。

  That company seems to be raking in money with their new product.

adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'

sloshing; gushing

Describes the sound or motion of liquid splashing or gushing, often in large amounts.

• バケツの水みずがガバガバとこぼれた。

  The water in the bucket sloshed out with a gush.