Fetching details from the dictionary...

to be jealous of; to envy; to begrudge
同僚の出世を猜む気持ちを抑えられなかった。
I could not suppress my feelings of envy toward my colleague's promotion.
他人の才能を猜むより自分を磨くべきだ。
Rather than envying others' talents, one should work on improving oneself.
弟の成功を猜む兄の姿は見ていて痛々しかった。
It was painful to watch the older brother begrudge his younger brother's success.