faithful

Pluralfaithfuls

1. 1
   adjective

   Staying loyal to a person or to a cause you believe in.

   The dog stayed faithful to the old man until the very end.

   She is a faithful friend who always takes my side.

   Similarloyal, devoted, true, steadfast, staunch

   Oppositedisloyal, faithless, treacherous

   Note
2. 2
   adjective

   Having sex only with your husband, wife, or long-term partner.

   He promised to stay faithful while she worked overseas.

   She left him after she learned he had not been faithful.

   Similartrue, loyal, monogamous

   Oppositeunfaithful, adulterous

3. 3
   adjective

   True to the facts or very close to the real thing.

   The movie stays faithful to the book, scene by scene.

   His drawing of the old bridge is very faithful.

   Similaraccurate, exact, true, precise, close

   Oppositeinaccurate, loose, free

4. 4
   adjective

   Able to be trusted and counted on.

   Our faithful old car has never let us down.

   She is a faithful worker who never misses a day.

   Similarreliable, dependable, trusty, trustworthy, constant

   Oppositeunreliable, undependable, untrustworthy

5. 5
   nounplural

   All the people who follow a religion or support a cause.

   Every Sunday the faithful fill the little church on the hill.

   The team's faithful came to every game, even in the rain.

   Similarbelievers, followers, loyalists, flock

   Note
6. 6
   adjective

   Believing strongly, especially in God or a religion.

   Her faithful grandmother prayed every night before bed.

   He grew up in a faithful family that went to church every week.

   Similardevout, pious, religious, observant

   Oppositelapsed, unbelieving, irreligious

7. 7
   nouncountable

   A person or thing you can always count on.

   That blue sweater is my old faithful on cold days.

   The band ended the show with a few old faithfuls everyone knew.

   Similarstandby, staple, favorite, classic, stalwart

   Note
8. 8
   adjective

   In math, describes a map that keeps different things different, used of certain representations and functors.

   In a faithful representation, different group elements always become different matrices.

   A faithful functor never joins two different arrows between the same pair of objects.

   Note
9. 9
   adjective

   In algebra, describes a module that only the zero of the ring can turn completely into zero.

   Any nonzero vector space is faithful over its field.

   Any ring with a 1 is faithful as a module over itself.

   Note

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