complain (v.)
- accuse
- ail
- allege
- arraign
- article
- beef
- bellyache
- bemoan
- bitch
- boggle
- book
- boycott
- challenge
- charge
- cite
- clamor
- confront
- crab
- croak
- cry
- demonstrate
- demur
- denounce
- dispute
- dissent
- expostulate
- finger
- fret
- front
- fuss
- gripe
- groan
- grouch
- grouse
- growl
- grumble
- grunt
- holler
- howl
- impeach
- imply
- impute
- indict
- insinuate
- kick
- lament
- march
- moan
- murmur
- mutter
- nag
- object
- oppose
- pester
- picket
- protest
- rally
- recalcitrate
- remonstrate
- repine
- report
- reproach
- revolt
- scruple
- squawk
- stand
- strike
- suffer
- task
- tax
- twit
- wail
- whimper
- whine
- withstand
- worry
- yap
- yelp