Tone
Tone Of Voice, Verbal Expression
noun
When your mouth makes tones we call it your tone or tone of voice. They're different kinds of sounds you make with your mouth that make you sound happy, sad, mean, etc.
This is a jukugo word that uses the on'yomi readings of the kanji. You haven't learned this reading for 口 yet. Remember when you learned the vocabulary word 口? Just take the ち off and you get its other on'yomi reading く. That's easy, right?
姉に対する父の口調は強かった。
My father's tone towards my sister was strong.
高校生の弟には、もう少しきつい口調で話してもらえませんか？
Could you please use a more severe tone when talking to your brother who is in high school?
先生は、いつも同じ口調で話します。
The teacher always talks in the same tone.