faithful

The definition of faithful is someone who is loyal and reliable or someone with a strong religious belief.

(adjective)

An example of faithful is a loyal dog who always comes to sit by your side.
An example of faithful is a spouse who never cheats on you with another person.
An example of faithful is a person who adheres strictly to the tenants of the Islamic religion.

See faithful in Webster's New World College Dictionary

adjective

keeping faith; maintaining allegiance; constant; loyal: faithful friends
marked by or showing a strong sense of duty or responsibility; conscientious: faithful attendance
accurate; reliable; exact: a faithful copy
Obsolete full of faith, esp. religious faith

Origin: ME

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See faithful in American Heritage Dictionary 4

adjective

Adhering firmly and devotedly, as to a person, cause, or idea; loyal.
Engaging in sex only with one's spouse or only with one's partner in a sexual relationship.
Having or full of faith.
Worthy of trust or belief; reliable.
Consistent with truth or actuality: a faithful reproduction of the portrait.

plural noun

The practicing members of a religious faith, especially of Christianity or Islam: a pilgrimage to Mecca made by the faithful.
The steadfast adherents of a faith or cause: a meeting of the party faithful.

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