彼は小心な性格で、人前で話すのが苦手だ。
He is timid by nature and not good at speaking in front of people.
小心な私は、会議で上司に反対意見を言えなかった。
Timid as I am, I couldn't voice my disagreement to my boss at the meeting.
弟は小心だから、夜道を一人で歩くのを怖がる。
My little brother is faint-hearted, so he's scared to walk alone on dark streets.