Synonyms of the word 
UNDESIRABLE → HATEFUL - INELIGIBLE - UNENVIABLE - UNSUITABLE - UNWANTED
undesirable
- adj. objectionable or not likely to please.
- n. an undesirable person.
hateful
- adj. Evoking a feeling of hatred.
- adj. Dislikeable.
- adj. Full of hatred.
ineligible
- adj. Not eligible; forbidden to do something.
- n. One who is not eligible.
unenviable
- adj. Difficult, undesirable, or unpleasant; not to be envied.
unsuitable
- adj. Not suitable; unfit; inappropriate.
unwanted
- adj. not wanted, welcome or acceptable.
- n. One who or that which is not wanted; an undesirable.
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