Noah Webster's New International Dictionary of the English Language

1. (a.) Equal to the end proposed; adequate to wants; enough; ample; competent; as, provision sufficient for the family; an army sufficient to defend the country.

2. (a.) Possessing adequate talents or accomplishments; of competent power or ability; qualified; fit.

3. (a.) Capable of meeting obligations; responsible.

4. (a.) Self-sufficient; self-satisfied; content.