insufficient (adj.)
- asymmetric
- base
- defective
- deficient
- disappointing
- disheartening
- disparate
- displeasing
- disproportionate
- dissatisfactory
- failing
- ill-sorted
- imperfect
- inadequate
- incommensurate
- incompetent
- incomplete
- inferior
- irregular
- lacking
- little
- maladroit
- mean
- mediocre
- minus
- mismatched
- odd
- petty
- scant
- scanty
- scarce
- shabby
- short
- shy
- skew
- skewed
- small
- trivial
- unequal
- uneven
- ungratifying
- unqualified
- unreached
- unsatisfactory
- unsatisfying
- unskillful
- wanting
