Faithful describes someone who is reliable and consistent. If you're a faithful volunteer at the animal shelter, you show up every Saturday and work hard to help the animals.

A faithful friend is loyal and steadfast — it's no wonder that many people consider their dogs to be their most faithful companions. Though faithful usually describes a person, you can also use it to talk about a particularly reliable object, like your faithful hiking boots. There's another sense of faithful that means "remaining true to," like faithful believers who pray and attend religious services regularly.

Definitions of faithful

adj steadfast in affection or allegiance

“years of faithful service”
faithful employees”
“we do not doubt that England has a faithful patriot in the Lord Chancellor”
steadfast in purpose or devotion or affection
fast, firm, loyal, truehearted
unwavering in devotion to friend or vow or cause
devoted (sometimes fanatically) to a cause or concept or truth
consistent with fact or reality; not false
trustworthy, trusty
worthy of trust or belief
not true to duty or obligation or promises
likely to change frequently often without apparent or cogent reason; variable
not faithful to religion or party or cause
perfidious, punic, treacherous
tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans
not true to an obligation or trust
untrustworthy, untrusty
not worthy of trust or belief
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adj marked by fidelity to an original

“a faithful copy of the portrait”
“a faithful rendering of the observed facts”
conforming exactly or almost exactly to fact or to a standard or performing with total accuracy

adj not having sexual relations with anyone except your husband or wife, or your boyfriend or girlfriend

“he remained faithful to his wife”
true to
sexually faithful
having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend
adulterous, cheating, two-timing
not faithful to a spouse or lover
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n any loyal and steadfast following

Type of:
followers, following
a group of followers or enthusiasts

n a group of people who adhere to a common faith and habitually attend a given church

congregation, fold
a church congregation guided by a pastor
Type of:
social group
people sharing some social relation

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