not hurt a fly
US /nɑt hɜrt ə flaɪ/
UK /nɑt hɜrt ə flaɪ/
1.
虫も殺さない, おとなしい
to be gentle and harmless; to be incapable of causing harm to anyone or anything
:
•
Despite his tough appearance, he wouldn't hurt a fly.
彼の強面な見た目にもかかわらず、彼は虫も殺さない。
•
My grandmother is so sweet; she wouldn't hurt a fly.
私の祖母はとても優しくて、虫も殺さない。