listen in   (TTS Sound)

The listen_in has 2 Senses.

• listen in
• listen quietly, without contributing to the conversation
• 会話に混ざることなく、静かに聞く

• listen in, eavesdrop
• 盗み聞く, 立ち聞く, 立聞き, 盗聞く, 盗み聞き, 盗み聴き, 立ち聞き, 立聞く, 盗聞き, 盗聞, 立聞
• listen without the speaker's knowledge; "the jealous man was eavesdropping on his wife's conversations"
• 話者の知識なしで聞く