An inadequate quantity of; not enough.
A quantity (of something) that is less than is needed.
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.
Of, relating to, or occurring in the stratosphere (“the region of the uppermost atmosphere”).
Unusually or unreasonably high; astronomical.