Synonyms of the word

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.

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.

endless

• adj. Having no end.
• adj. Extending indefinitely.
• adj. (obsolete) Without profitable end; fruitless; unsatisfying.

eonian

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

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.

interminable

• adj. Existing or occurring without interruption or end; ceaseless, unending.

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.

long

• adj. Having much distance from one terminating point on an object or an area to another terminating point (usually…
• adj. Having great duration.
• adj. Seemingly lasting a lot of time, because it is boring or tedious or tiring.
• adj. (Britain, dialect) Not short; tall.
• adj. (finance) Possessing or owning stocks, bonds, commodities or other financial instruments with the aim…
• adj. (cricket) Of a fielding position, close to the boundary (or closer to the boundary than the equivalent…
• adj. (tennis, of a ball or a shot) That land beyond the baseline (and therefore is out).
• adj. Occurring or coming after an extended interval; distant in time; far away.
• adv. Over a great distance in space.
• adv. For a particular duration.
• adv. For a long duration.
• n. (linguistics) A long vowel.
• n. (programming) A long integer variable, twice the size of an int, two or four times the size of a short,…
• n. (finance) An entity with a long position in an asset.
• n. (music) A note formerly used in music, one half the length of a large, twice that of a breve.
• v. (transitive, finance) To take a long position in.
• v. (intransitive) To await, aspire, desire greatly (something to occur or to be true).
• adj. (archaic) On account of, because of.
• v. (archaic) To be appropriate to, to pertain or belong to.
• n. longitude.

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.

unceasing

• adj. continuous; continuing indefinitely without stopping.

unending

• adj. Not ending; having no end.