as hard as nails

Phrase :
( hard as nails )
خیلی سخت گیر
خیلی سنگدل و بی رحم
خیلی سرسخت

به عنوان مثال:
‘I wouldn't say I'm soft as putty but I wouldn't say I'm hard as nails either

منابع

• https://www.lexico.com/definition/as_hard_as_nails