Adjective

(en adjective)

Not certain; unsure.

*(John Tillotson) (1630-1694)

*:Man, without the protection of a superior Being,is uncertain of everything that he hopes for.

Not known for certain; questionable.

:

Not yet determined; undecided.

Variable and subject to change.

Fitful or unsteady.

*

*:Turning back, then, toward the basement staircase, she began to grope her way through blinding darkness, but had taken only a few uncertain steps when, of a sudden, she stopped short and for a little stood like a stricken thing, quite motionless save that she quaked to her very marrow in the grasp of a great and enervating fear.

Unpredictable or capricious.

*Sir (Walter Scott) (1771-1832)

*:O woman! in our hours of ease, / Uncertain , coy, and hard to please!

Adjective

(-)

Lasting forever; unending.

* John Locke

to know whether there were any real being, whose duration has been eternal

* Dryden

Fires eternal in thy temple shine.

* {{quote-news

, year=2012 , date=May 27 , author=Nathan Rabin , title=TV: Review: THE SIMPSONS (CLASSIC): “New Kid On The Block” (season 4, episode 8; originally aired 11/12/1992) , work=The Onion AV Club citation , page= , passage=In a bid to understand the eternal mystery that is woman, Bart goes to the least qualified possible source for advice and counsel: his father, who remarkably seems to have made it to his mid-30s without quite figuring out much of anything. }}

(philosophy) existing outside time; as opposed to sempiternal, existing within time but everlastingly

(dated) Exceedingly great or bad; used as an intensifier.

some eternal villain