A disbeliever, a denier: someone who rejects or disbelieves in God as per Islam (Arabic: الله Allāh) or the tenets of Islam; or more broadly any non-Muslim.
A person not adhering to a main world religion; a follower of a pantheistic or nature-worshipping religion.
An uncivilized or unsocialized person.
An unruly, badly educated child.
Relating to, characteristic of religions that differ from main world religions.
Savage, immoral, uncivilized, wild.