Seeming to never end; endlessly; constantly.

Lasting forever, or for an indefinitely long time / Set up to be in effect or have tenure for an unlimited duration / Continuing; uninterrupted / (botany) Flowering throughout the growing season

Ellipsis of perpetual check..

simple past tense and past participle of perpetuate

present participle of perpetuate

Third-person singular simple present indicative form of perpetuate

For an indefinitely long time / For life

The act of prolonging existence, of keeping something alive or active.

plural of perpetuation

(transitive) To make perpetual; to preserve from extinction or oblivion. / (transitive) To prolong the existence of.