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

• vacationing
• vacationist
• vacationists
• vacationless
• vacations
• vacatur
• vacaturs
• vaccinal
• vaccinate
• vaccinated
• vaccinates
• vaccinating
• vaccination
• vaccinations
• vaccinator
• vaccinators
• vaccinatory
• vaccine
• vaccines
• vaccinia
• Vacciniaceae
• vaccinial
• vaccinias
• Vaccinioideae
• vaccinium