ع س رʿ-s-r
(س، ک) عَسِرَ يَعْسَرُʿasira yaʿsaru, عَسُرَ يَعْسُرُ عُسْرًاʿasura yaʿsuru ʿusran: to be hard and difficult; to be straitened in one's provision.
عُسْرٌʿusr (noun, ism dhāt): hardship.
عُسْرَةٌʿusrah: straitened circumstances, poverty.
عُسْرٰىʿusrā (فُعْلٰىfuʿlā): a hard outcome, difficulty. ﴿فَاِنَّ مَعَ الْعُسْرِ يُسْرًا﴾ (Ash-Sharḥ 94:5); ﴿وَاِنْ كَانَ ذُوْ عُسْرَةٍ فَنَظِرَةٌ اِلٰى مَيْسَرَةٍ﴾ (Al-Baqarah 2:280); ﴿فَسَنُيَسِّرُهُۥ لِلْعُسْرٰى﴾ (Al-Layl 92:10)
Form VI (tafāʿul) تَعَاسَرَ يَتَعَاسَرُ تَعَاسُرًاtaʿāsara yataʿāsaru taʿāsuran: to deal harshly with one another, to make difficulties for each other. ﴿وَاِنْ تَعَاسَرْتُمْ فَسَتُرْضِعُ لَهُۥٓ اُخْرٰى﴾ (Aṭ-Ṭalāq 65:6)