mumble

静かにつぶやく

to speak in a low voice, making it hard to hear

低い声で話し、聞き取りにくくする

そっとつぶやく

to speak in a gentle, low voice

静かではっきりしない方法で話す

怒ってつぶやく

to speak unclearly out of anger

怒りから不明瞭に話す

to speak in a way that is unclear and difficult to understand

苦々しくつぶやく

to speak unclearly while expressing deep disappointment or resentment

深い失望や恨みを表現しながら不明瞭に話す

早口でつぶやく

to speak unclearly and rapidly

不明瞭かつ速く話す

皮肉っぽくつぶやく

to say something unclearly in a sarcastic tone

皮肉なトーンで不明瞭に話す

眠そうにつぶやく

to speak unclearly due to being tired

疲れているときや半覚醒のときに、低く不明瞭な声で話すこと。

～に/独り言でつぶやく

to speak unclearly in the direction of someone or to oneself

誰かの方を向いて、または自分自身に不明瞭に話す

～に向かってつぶやく

to speak unclearly with one's voice directed into an object, muffling the sound

物に向かって不明瞭に話し、音をこもらせる

～についてつぶやく

to speak unclearly regarding a particular topic

特定の話題について不明瞭に話す