Unexcused
Part of speech: adjective
Definition: That has not been excused
Nonexempt
Part of speech: adjective
Definition: Not exempt.Subject to taxation; not within any category of income to which taxes are not applied.
Unexcused as an adjective is that has not been excused while Nonexempt as an adjective is not exempt.
Part of speech: adjective
Definition: That has not been excused
Part of speech: adjective
Definition: Not exempt.Subject to taxation; not within any category of income to which taxes are not applied.
We hope you now know whether to use Unexcused or Nonexempt in your sentence.