Synonyms of the word

unceasing

• adj. continuous; continuing indefinitely without stopping.

aeonian

• adj. Alternative spelling of eonian.

ageless

• adj. (relative to past) Having existed for so great a period of time that its longevity cannot be expressed.
• adj. (relative to future) Continuing infinitely or indefinitely.
• adj. Always appearing youthful; never seeming to age.

ceaseless

• adj. Without an end.
• adj. Without stop or pause, incessant.

constant

• adj. Unchanged through time or space; permanent.
• adj. Consistently recurring over time; persistent.
• adj. Steady in purpose, action, feeling, etc.
• adj. Firm; solid; not fluid.
• adj. (obsolete) Consistent; logical.
• n. That which is permanent or invariable.
• n. (algebra) A quantity that remains at a fixed value throughout a given discussion.
• n. (sciences) Any property of an experiment, determined numerically, that does not change under given circumstances.
• n. (computing) An identifier that is bound to an invariant value; a fixed value given a name to aid in readability…

continuous

• adj. Without break, cessation, or interruption; without intervening time.
• adj. Without intervening space; continued; protracted; extended.
• adj. (botany) Not deviating or varying from uniformity; not interrupted; not joined or articulated.
• adj. (analysis, of a function) Such that, for every x in the domain, for each small open interval D about f(x),…
• adj. (mathematics, more generally, of a function) Such that each open set in the range has an open preimage.
• adj. (grammar) Expressing an ongoing action or state.

eonian

• adj. Of or pertaining to an eon.
• adj. (by extension) everlasting.

eternal

• adj. Lasting forever; unending.
• adj. (philosophy) existing outside time; as opposed to sempiternal, existing within time but everlastingly.
• adj. (dated) Exceedingly great or bad; used as an intensifier.

everlasting

• adj. Lasting or enduring forever; existing or continuing without end; immortal; eternal.
• adj. Continuing indefinitely, or during a long period; perpetual; sometimes used, colloquially, as a strong…
• adj. (philosophy) Existing with infinite temporal duration (as opposed to existence outside of time).
• adv. (colloquial) Extremely.
• n. An everlasting flower.
• n. (historical) A durable cloth fabric for shoes, etc.

incessant

• adj. Without pause or stop; not ending, especially to the point of annoyance.

lasting

• adj. Persisting for an extended period of time.
• v. present participle of last.
• n. continuance; endurance.
• n. A durable woollen material formerly used for women's shoes; everlasting.
• n. The act or process of shaping on a last.

never-ending

• adj. Alternative form of neverending.

permanent

• adj. Without end, eternal.
• adj. Lasting for an indefinitely long time.
• n. A chemical hair treatment imparting or removing curliness, whose effects typically last for a period of…
• v. (transitive, dated) To perm (the hair).

perpetual

• adj. Lasting forever, or for an indefinitely long time.
• adj. Set up to be in effect or have tenure for an unlimited duration.
• adj. Continuing uninterrupted.
• adj. Flowering throughout the growing season.

unending

• adj. Not ending; having no end.

uninterrupted

• adj. continuing with no interruption.

unremitting

• adj. incessant; never slackening.