Abdullah is a pretty common for Muslim males which means 'Servant of Allah'.
I'd like to know the female equivalent of it as I have not come across any females with a similar nomenclature.
The Arabic equivalent of
'Abdullah
عبد الله
is
Amatullah
أمة الله
Because the feminine of
' Abd
عبد
Is
Amah
أمة
Other synonyms are:
جاريَة Jariah.
خادِمَة Khadimah.
عَبْدَة Abdah'.
مَمْلُوكَة. Mamlukah
I must say that I have hardly heard of anybody naming his daughter Amatullah, but heard of a convert who gave herself this name.
Basically equivalent to all the names that include one of Allah's names for men their female forms are allowed for female names like Amatullah,
Amatu-Rahman
أمة الرحمان/الرحمن،
Amatu-ar-Razaq
أمة الرزاق.
etc.
according to this fatwa on islamweb (in Arabic). However they recommend when calling a person not to call her (briefly) Amah. But this is just a recommendation not a prohibition to do so.
There are some, like
عبيدة or
عبيدة الله or more rarely, in Morocco there are women called
عوبيدة
There's a feminine for sure