unforgiving
adjective uk/ˌʌn.fəˈɡɪv.ɪŋ/ us/ˌʌn.fɚˈɡɪv.ɪŋ/
不原谅人的，不饶恕人的;无情的
not willing to forgive people for things they do wrong
My wife is unforgiving by nature. 我妻子生来就得理不饶人。
（环境等）恶劣的，不利的
unpleasant or difficult to deal with
The unforgiving seas make search and rescue very difficult. 大海恶劣的环境使搜救工作变得非常困难。
（衣料、衣服等）显得人胖的
An unforgiving fabric or item of clothing can make you look fat.
Satin is gorgeous but can be unforgiving and emphasize bulges. 缎面虽然华丽，但也会显胖，突出臃肿的地方。