To disconcert is to unsettle someone, make them feel confused and out of sorts. It's a mixture of to embarrass and to creep out.

Disconcert comes from the old French word disconcerter meaning confused, which is just how it feels. The prefix dis means "not" — it has a bad attitude and shows up in dismiss (not accept), dissonence (not harmonious), and disown (not own), among others. After dis comes concert from the word concerter "to bring together" (like at a concert!). If you disconcert someone, it’s like you dis them at a concert, and that person is not having fun. At all.

Definitions of disconcert

v cause to lose one's composure

discomfit, discompose, untune, upset
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enervate, faze, unnerve, unsettle
disturb the composure of
cause to lose control emotionally
bemuse, bewilder, discombobulate, throw
cause to be confused emotionally
abash, embarrass
cause to be embarrassed; cause to feel self-conscious
anguish, hurt, pain
cause emotional anguish or make miserable
cause great unhappiness for; distress
cause to lose one's nerve
confuse, flurry, put off
cause to feel embarrassment
break someone's heart
cause deep emotional pain and grief to somebody
agonise, agonize
cause to agonize
aggrieve, grieve
cause to feel sorrow
oppress or trouble greatly
strain, stress, try
test the limits of
give pain or trouble to
excruciate, rack, torment, torture
torment emotionally or mentally
Type of:
arouse, elicit, enkindle, evoke, fire, kindle, provoke, raise
call forth (emotions, feelings, and responses)

v cause to feel embarrassment

confuse, flurry, put off
bedevil, befuddle, confound, confuse, discombobulate, fox, fuddle, throw
be confusing or perplexing to; cause to be unable to think clearly
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cause to be nervous or upset
make confused or perplexed or puzzled
deflect, distract
draw someone's attention away from something
Type of:
abash, embarrass
cause to be embarrassed; cause to feel self-conscious

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