impermanent Antonyms

permanent long-drawn undestroyable unfailing warring unceasing unending unchangeable eonian long-lasting long-term longstanding timeless termless longeval macrobiotic monomaniacal perpetual perseverant retentive reverseless sempervirent settled sustained perm nonreturnable entrenched as solid as a rock deeply rooted deeply embedded deeply entrenched deeply fixed deeply implanted deeply ingrained driven in fixed to a great extent yearlong undiscouraged unbendable nonreversible 24-7 age-long bred-in-the-bone deep-rooted deep-seated dog's age god-like life long permed greatly fixed