Adjective

(en adjective)

Equal to the end proposed; adequate to wants; enough; ample; competent; as,

We have provision sufficient for the family

This army is sufficient to defend the country.

There is not sufficient access to the internet in the some small country villages.

Possessing adequate talents or accomplishments; of competent power or ability; qualified; fit.

A two-week training course is sufficient to get a job in the coach-driving profession.

(archaic) Capable of meeting obligations; responsible.

* 1668 , (Samuel Pepys), December 23 1668

...to take the best ways we can, to make it known to the Duke of York; for, till Sir J. Minnes be removed, and a sufficient man brought into W. Pen's place, when he is gone, it is impossible for this Office ever to support itself.

self-sufficient; self-satisfied; content.

Adjective

(en adjective)

Without fault or weakness; incapable of error or fallacy.

He knows about many things, but even he is not infallible .

certain, sure.

* {{quote-book

, year=1818 , author=Mary Shelley , title=Frankenstein , chapter=4 citation , passage=I see by your eagerness and the wonder and hope which your eyes express, my friend, that you expect to be informed of the secret with which I am acquainted; that cannot be; listen patiently until the end of my story, and you will easily perceive why I am reserved upon that subject. I will not lead you on, unguarded and ardent as I then was, to your destruction and infallible misery.}}