English rendering Mutter under one’s breath Literal translation: “Put the speech sounds into one’s mouth”
Speak in a low mumble so others cannot hear
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Read the meanings, trace, then cover above the masking line and write. Uncover, choose a meaning, and make your own sentence.
Writing text말소리를 입에 넣다
Explore the body parts or scenes linked to this idiom.
A silent film that writes the headword and its meaning.
raise one’s voice sharply To shout loudly out of irritation. 
Quietly and unnoticed Stealthily, without being revealed. 
Spread a rumor Make a rumor circulate 
be utterly uninformed A coarse expression for knowing no news at all. 
2 meanings Be highly effective; fit exactly Have a very strong effect. 
Curse furiously Vulgarly, curse with all one’s might 
Now that you mention it An expression indicating one will state one’s thoughts or opinion since the topic has arisen 
Be a different matter Have conditions, circumstances, or the like change. 
gossip incessantly To keep talking indiscreetly. 
babble indiscreetly To speak carelessly, chatteringly, and frivolously. Browse in Hangul order.
WORDROW Korean Idioms