Synonyms to long-term
abiding, age-long, aged, ancient, antique, changeless, chronic, commorant, constant, continuing, continuous, diuturnal, durable, dwelling, enduring, evergreen, firm, fixed, frozen, hardy, immobile, immutable, in residence, indefatigable, intact, intransient, inveterate, inviolate, lasting, living, living in, lodging, long-lasting, long-lived, long-standing, longeval, longevous, macrobiotic, never-failing, of long duration, of long standing, perdurable, perduring, perennial, permanent, perpetual, persistent, persisting, quiescent, remaining, resident, residentiary, residing, rigid, sempervirent, solid, stable, static, stationary, staying, steadfast, steady, sticking, sustained, torpid, tough, unaltered, unceasing, unchangeable, unchanged, unchanging, unchecked, undestroyed, undying, unfading, unfailing, unfaltering, unqualified, unquestioning, unremitting, unshifting, unvaried, unvarying, vital, wholehearted, advanced, advanced in life, advanced in years, age-old, along in years, antediluvian, developed, doddering, d