Entry
  1. Adverb (fukushi)

    grumbling; muttering; complaining; moaning

    Onomatopoeic or mimetic wordsee ぶつぶつ

    いつまでもぶつくさ言っているのは君の勝手だけどね、それじゃあ事態は何一つ変わらないよ。
    You can complain 'til the cows come home, but it's not going to make a bit of difference.

Also written ブツクサ

Pitch on OJAD