An individual who is not suited to employment.

Not essential. / Void of essence, or real being.

(obsolete) unploughed / earless; without ears

simple past tense and past participle of unearth

Not electrically earthed.

In an unexceptionable manner.

Not enlightened; ignorant in general or of some particular fact.

The state of being unexpected.

Lacking prior examples; unprecedented.

(economics) A type of unemployment explained by a seasonal variation in the structure of jobs and/or labour offered. Seasonal unemployment typically repeats the same pattern annually.