ب س رb-s-r
(ن) بَسَرَ يَبْسُرُ بُسُوْرًاbasara yabsuru busūran: (of the face) to contract, to frown, to scowl. ﴿ثُمَّ عَبَسَ وَبَسَرَ﴾ (Al-Muddaththir 74:22)
بَاسِرbāsir / بَاسِرَةbāsirah (active participle, ism fāʿil): scowling; a gloomy, sour face. ﴿وَوُجُوْهٌ يَّوْمَئِذٍ بَاسِرَةٌ﴾ (Al-Qiyāmah 75:24)