perturb (v.)
- abash
- addle
- afflict
- agitate
- ail
- alarm
- beat
- becloud
- bedazzle
- befuddle
- beset
- bewilder
- bother
- bug
- burden
- churn
- cloud
- concern
- confuse
- convulse
- daze
- dazzle
- disarrange
- discombobulate
- discomfit
- discommode
- discompose
- disconcert
- dishevel
- dismay
- disorder
- disorganize
- disorient
- disquiet
- distract
- distress
- disturb
- electrify
- embarrass
- embroil
- entangle
- excite
- ferment
- flummox
- flurry
- fluster
- flutter
- fog
- fret
- fuddle
- fuss
- harass
- inconvenience
- irk
- jar
- jolt
- jumble
- maze
- mist
- muddle
- paddle
- perplex
- plague
- pother
- puzzle
- rattle
- rile
- ripple
- rock
- roil
- roughen
- ruffle
- rumple
- shake
- shock
- spook
- stagger
- stir
- swirl
- throw
- torment
- trouble
- unnerve
- unsettle
- upset
- vex
- whip
- whisk
- worry