EntryCommonJLPT N2
  1. Noun, Adverb (fukushi), Adverb taking the 'to' particle

    grunt; grumble; complaint; mutter

    Onomatopoeic or mimetic word

    祖父はいつも何やかやぶつぶつ不平を言っていた。
    My grandfather was always grumbling about something or other.
  2. pimples; spots; eruption; rash

  3. cutting into small pieces

  4. simmering

Also written ブツブツ

Pitch on OJAD