not hurt a fly
US /nɑt hɜrt ə flaɪ/
UK /nɑt hɜrt ə flaɪ/
1.
no mataría ni una mosca, ser inofensivo
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.
A pesar de su apariencia ruda, no mataría ni una mosca.
•
My grandmother is so sweet; she wouldn't hurt a fly.
Mi abuela es tan dulce; no mataría ni una mosca.