Gender invariant comparative adjectives (اسم تفضيل) are male-only

[mirkovogel]

Comparative adjectives that do not have a different surface forms for male and female are considered male-only.

>>> g.generate("أَكْثَر", {'pos': 'adj_comp', "gen": "f"})
[]

Here are the most frequent ones:

أَكْثَر
أَقَلّ
أَقْرَب
أَبْرَز
أَهَمّ
أَشَدّ
أَوْسَع
أَسْرَع
أَحْدَث
أَسْوَأ
أَخْطَر
أَسْبَق
أَشْهَر
أَجْمَل

Comparative adjectives that do have a different surface forms for male and female are fine though, e.g. أصغر - صغرى

[mirkovogel]

This does not seem to apply to comparative adjectives only, e.g. قُدُس -> only male (but: الروح القدس)

[rawanessam]

Thank you for raising the issue we are working on it as part of the next big release