the top twenty words with prefixes

deleterious

harmful; dangerous; destructive

demise

the end of existence or activity; death

despondent

feeling downcast and disheartened

exonerate

to free from accusation or blame; to EXCULPATE

exorbitant

unreasonably expansive; inordinately priced; literally out of orbit

reciprocate

to return in kind or degree; to give or take mutually

resilient

able to bounce back from adversity

resurgence

surging back to prominence; rising again

malaise

a feeling of mental, moral, or spiritual unease

malicious

having or showing a desire to cause harm

uncouth

displaying deplorable manners that are CRUDE, rude, and BOORISH

unfettered

free from restraint or restriction; free and open

uncorroborated

unsupported by other evidence; unsubstantiated

unnerved

filled with apprehension; deprived of courage and strength

undaunted

not discouraged or disheartened; resolutely courageous; INTREPID

unsavory

distasteful or disagreeable; morally offensive

unfailing

the quality of being sure and certain; constant

unaffected

the quality of being emotionally unmoved by outside events

unscrupulous

the quality of being unprincipled; lacking standards of what is right or honorable

unpretentious

characterized by a modest and natural manner; not STILTED or unnatural