adjective
loyal, steady
Synonyms: abiding, adamant, allegiant, ardent, bound, changeless, constant, dedicated, dependable, enduring, established, faithful, fast, firm, fixed, immobile, immovable, inexorable, inflexible, intense, intent, liege, never-failing, obdurate, persevering, relentless, reliable, resolute, rigid, single-minded, stable, staunch, stubborn, sure, tried-and-true, true, true-blue, unbending, unfaltering, unflinching, unmovable, unqualified, unquestioning, unswerving, unwavering, unyielding, wholehearted
Antonyms: disloyal, unreliable, untrustworthy