insufficient

Etymology

From Middle French insufficient, from Latin insufficiens. See also in- + sufficient.

det

1. An inadequate quantity of; not enough.
   Insufficient time is available to reflect on the problem.
2. (as pronoun) A quantity (of something) that is less than is needed.
   Insufficient of the building remains to determine its age.

adj

1. Not sufficient; of a type or kind that does not suffice, that does not satisfy requirements or needs.
   It is a necessary condition but an insufficient one.
2. Not sufficient; lacking competent power or ability; unqualified, unequal, unfit.