not hurt a fly
US /nɑt hɜrt ə flaɪ/
UK /nɑt hɜrt ə flaɪ/

1.
tidak akan menyakiti lalat, tidak berbahaya
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.
Meskipun penampilannya tangguh, dia tidak akan menyakiti lalat.
•
My grandmother is so sweet; she wouldn't hurt a fly.
Nenek saya sangat manis; dia tidak akan menyakiti lalat.