4
forever(adverb, everlasting)
3
dateless
3
definite
3
fixed
3
full-time
3
imperishable
3
indestructible
3
interminable(adjective, limited, finite)
3
lifelong(adjective, lasting)
3
stable(adjective, weak, soft, changeable)
3
unceasing
3
undying
3
unqualified(adjective, suitable, absolute, outright)
2
chronic(adjective, incessant)
2
continual(adjective, constant, incessant)
2
continued
2
continuous
2
deathless
2
incessant
2
indelible
10 years ago|3.6k views|share |citing 
APASmart Define. (2016). temporary thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/temporary/thesaurus/antonyms
ChicagoSmart Define. 2016. "temporary thesaurus" https://smartdefine.org/temporary/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2016, temporary thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/temporary/thesaurus/antonyms>.
MLASmart Define. "temporary thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/temporary/thesaurus/antonyms>