adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'
blowing repeatedly; puffing to cool
Onomatopoeia for blowing air repeatedly, often to cool hot food or drink. Can be used adverbially or with する.
熱いスープをふうふう吹いて冷ました。
I blew on the hot soup to cool it down.
子供がふうふうと
The child blew on the candle and put it out.
adverb, adverb taking the 'to' particle
huffing and puffing; panting
Describes heavy breathing from exertion or excitement. Often used in the pattern ふうふう言う.
階段を駆け上がったら、ふうふう言ってしまった。
After running up the stairs, I was huffing and puffing.
adverb
struggling; having difficulty
Figurative use for struggling with a task or situation. Typically appears as ふうふう言う.
難しい宿題にふうふう言っている。
I'm struggling with the difficult homework.