Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb unnerve

1 sense of unnerve

Sense 1
faze, unnerve, enervate, unsettle -- (disturb the composure of)
       => upset, discompose, untune, disconcert, discomfit -- (cause to lose one's composure)

Antonyms of adj unnerved

1 sense of unnerved

Sense 1
unnerved -- (deprived of courage and strength; "the steeplejack, exhausted and unnerved, couldn't hold on to his dangerous perch much longer")

INDIRECT (VIA afraid) -> unafraid, fearless -- (oblivious of dangers or perils or calmly resolute in facing them)

Similarity of adj unnerved

1 sense of unnerved

Sense 1
unnerved -- (deprived of courage and strength; "the steeplejack, exhausted and unnerved, couldn't hold on to his dangerous perch much longer")
       => afraid (predicate) (vs. unafraid) -- (filled with fear or apprehension; "afraid even to turn his head"; "suddenly looked afraid"; "afraid for his life"; "afraid of snakes"; "afraid to ask questions")