1. An incredulous person; an infidel; one who discredit revelation.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• unbeliver,
• unbelievely,
• unbelivers,
• nbelieve,
• unbelive,
• unbelieve,
• unblievers,
• unbliever,
• unbheliever,
• unbleiever,
• unbeleiver,
• unbeliveer,
• unbelievver,
• unbelievar,
• unbeleved,
• unbeliveed,
• unbelievs,
• Unbelieva,
• unbelievese,
• unbellieves

• unbelieving,
• unbelievingly,
• unfelled,
• unbelief,
• unveiled,
• unbelievably,
• unbeloved,
• unfueled,
• unbelievable.

The adjective form of the word "unbeliever" is "unbelieving".

The plural of the "unbeliever" can be the "unbelievers".

The singular of the "unbeliever" can be the "unbeliever".