Synonyms of perpetual in English:

perpetual


See definition of perpetual

adjective

1‘deep caves in perpetual darkness’

SYNONYMS
everlasting, never-ending, eternal, permanent, unending, endless, without end, lasting, long-lasting, constant, abiding, enduring, perennial, timeless, ageless, deathless, undying, immortal
unfailing, unchanging, never-changing, changeless, unvarying, unfading, invariable, immutable, indissoluble, indestructible, imperishable
rare sempiternal, perdurable
ANTONYMS

transitory, temporary

2‘the population lived in a perpetual state of fear’

SYNONYMS
constant, permanent, uninterrupted, continuous, unremitting, unending, unceasing, persistent, unbroken
ANTONYMS

intermittent

3‘those in authority become weary of perpetual demands for cash from worthy causes’

SYNONYMS
interminable, incessant, ceaseless, endless, without respite, relentless, unrelenting, persistent, frequent, continual, continuous, non-stop, never-ending, recurrent, repeated, unremitting, sustained, round-the-clock, always-on, habitual, chronic, unabating
informal eternal