形容词

1. 不间断的；不变的；持续的；长久的
A perpetual feeling, state, or quality is one that never ends or changes.

1. uninterrupted in time and indefinitely long continuing

e.g. the ceaseless thunder of surf
in constant pain
night and day we live with the incessant noise of the city
the never-ending search for happiness
the perpetual struggle to maintain standards in a democracy
man's unceasing warfare with drought and isolation
unremitting demands of hunger

Synonym: ceaselessconstantincessantnever-endingunceasingunremitting

2. continuing forever or indefinitely

e.g. the ageless themes of love and revenge
eternal truths
life everlasting
hell's perpetual fires
the unending bliss of heaven

Synonym: agelessaeonianeonianeternaleverlastingunendingunceasing