say it: FAYTH-fuhl
faithful is an adjective and noun meaning "steadfast in affection or allegiance". It carries 5 recorded senses.
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”
marked by fidelity to an original
“a close translation”
“a faithful copy of the portrait”
“a faithful rendering of the observed facts”
not having sexual relations with anyone except your husband or wife, or your boyfriend or girlfriend
“he remained faithful to his wife”
any loyal and steadfast following
a group of people who adhere to a common faith and habitually attend a given church
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for faithful come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.