PERMANENT

adj. 1 everlasting, eternal, unending, endless, perpetual, unceasing, constant, undying, imperishable, indestructible, stable, abiding, long-lasting, lasting, enduring, perennial, long-lived, durable The satellite is in permanent orbit around the earth 2 unchanging, invariable, changeless, fixed, unchangeable, immutable, unalterable, stable, persistent This stain is permanent and will not come out in the wash Bonham is a permanent member of the executive committee.