Not sufficient; lacking competent power or ability; unqualified, unequal, unfit.
Not sufficient; of a type or kind that does not suffice, that does not satisfy requirements or needs.
An inadequate quantity of; not enough.
A quantity (of something) that is less than is needed.
Similarly producing results or performing deeds in abundance
Fertile; producing offspring or fruit in abundance — applied to plants producing fruit, animals producing young, etc.
Of a flower: from which another flower is produced.