Merriam-Webster Online Dictionary
permanent (adjective)continuing or enduring without fundamental or marked change - stable lasting
a long-lasting hair wave or straightening produced by mechanical and chemical means - called also permanent wave
Merriam-Webster Online Thesaurus
permanent (adjective)lasting forever
SYNONIMS:
ceaseless, dateless, deathless, endless, eternal, immortal, permanent, perpetual, undying, unendingRELATED WORDS:
durable, enduring, lasting, long-lived, persistent, stubborn; imperishable, indefeasible, indefectible, indelible, indestructible, indissoluble, inexpungible; timeless; abiding, stable, standing, steadfast, steady, unfailing, unfaltering; continual, continuing, continuous, incessant, unbroken, unceasing, uninterrupted, unremittingNEAR ANTONYMS:
ephemeral, evanescent, fleeting, fugacious, fugitive, momentary, passing, short-lived, transitory; interim, provisional, short-term