disconcert (v.)
- abash
- addle
- agitate
- appall
- astound
- baffle
- balk
- becloud
- bedazzle
- befuddle
- bewilder
- blast
- bother
- brave
- bug
- chagrin
- challenge
- checkmate
- circumvent
- cloud
- confound
- confront
- confuse
- contravene
- counter
- counteract
- countermand
- cross
- dash
- daze
- dazzle
- defeat
- defy
- destroy
- discombobulate
- discomfit
- discompose
- discountenance
- dish
- dismay
- disorganize
- disorient
- disquiet
- disrupt
- disturb
- electrify
- elude
- embarrass
- entangle
- faze
- flummox
- flurry
- fluster
- flutter
- fog
- foil
- frustrate
- fuddle
- fuss
- humiliate
- jar
- jolt
- maze
- mist
- mortify
- muddle
- nonplus
- perplex
- perturb
- pother
- puzzle
- rattle
- rock
- ruffle
- ruin
- sabotage
- scotch
- shake
- shock
- spike
- spoil
- stagger
- stir
- stonewall
- stump
- thwart
- trouble
- unsettle
- upset