infidel /inˈfi-del or -dl/

1. Someone who rejects a religion, esp Christianity or Islam
2. Loosely, someone who disbelieves in a particular theory, etc

1. Unbelieving
2. Sceptical
3. Disbelieving a religion

infidelˈity noun

1. Lack of faith or belief
2. Disbelief in religion
3. Unfaithfulness, esp in marriage
4. An instance of this
5. Treachery

• ugliest
• uglification
• uglifications
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• uglifies
• uglify
• uglifying
• uglily
• ugliness
• uglinesses
• ugly
• ugly customer
• ugly customers
• ugly duckling
• ugly ducklings
• uglying
• ugly man
• ugly men
• Ugrian
• Ugric
• Ugro-Finnic
• ugs
• ugsome
• ugsomeness
• ugsomenesses