abiding (adj.)

• aged
• ancient
• antique
• changeless
• chronic
• constant
• continuing
• continuous
• durable
• dwelling
• enduring
• evergreen
• firm
• fixed
• frozen
• hardy
• immobile
• immutable
• indefatigable
• intact
• inveterate
• inviolate
• lasting
• living
• long-lasting
• long-lived
• long-standing
• long-term
• macrobiotic
• perdurable
• perennial
• permanent
• perpetual
• persistent
• persisting
• quiescent
• remaining
• resident
• rigid
• solid
• stable
• static
• stationary
• steadfast
• steady
• sticking
• sustained
• torpid
• tough
• unaltered
• unceasing
• unchangeable
• unchanged
• unchanging
• unchecked
• undying
• unfading
• unfailing
• unfaltering
• unqualified
• unquestioning
• unremitting
• unvaried
• unvarying
• vital
• wholehearted