ぐうぐう Meanings Adverb fast (asleep); snoring or grumbling sound Example sentences 会議中にお腹がグーグー鳴っちゃって困っちゃったよ。My stomach started growling right there in the meeting. It was embarrassing. お腹がグーグー鳴っている。My stomach is growling. Word lists Onomatopoeia Jinuma: Japanese Dictionary · Word lists