(س) بَئِسَ يَبْاَسُ بَاْسًاbaʾisa yabʾasu bāsan: (of a thing) to be hard, severe.
بَاْسٌbās (noun, ism dhāt): severity, hardship. ﴿وَاَنْزَلْنَا الْحَدِيْدَ فِيْهِ بَاْسٌ شَدِيْدٌ﴾ (Al-Ḥadīd 57:25); بَاْسَآءُbāsāʾu: ﴿وَالصّٰبِرِيْنَ فِي الْبَاْسَآءِ وَالضَّرَّآءِ﴾ (Al-Baqarah 2:177)
بَآئِسٌbāʾis (active participle (ism fāʿil)): one in a hard state, afflicted by hardship. ﴿وَاَطْعِمُوا الْبَآئِسَ الْفَقِيْرَ﴾ (Al-Ḥajj 22:28)
بَئِيْسٌbaʾīs: hard always and in every condition. ﴿بِعَذَابٍۢ بَئِيْسٍ﴾ (Al-Aʿrāf 7:165)
بِئْسَbiʾsa: a word of censure, how evil. ﴿وَبِئْسَ الْمَصِيْرُ﴾ (Al-Baqarah 2:126)
Form VIII (iftiʿāl) اِبْتَاَسَ يَبْتَئِسُ اِبْتِئَاسًاibtaʾasa yabtaʾisu ibtiʾāsan: to be deeply grieved, to be disheartened. ﴿فَلَا تَبْتَئِسْ بِمَا كَانُوْا يَفْعَلُوْنَ﴾ (Hūd 11:36)