kicker (n.)
- astonishment
- bellyacher
- blockbuster
- blow
- bomb
- bombshell
- catch
- clause
- complainant
- complainer
- condition
- crab
- crank
- croaker
- faultfinder
- given
- grouch
- grounds
- growler
- grumbler
- joker
- kvetch
- malcontent
- murmurer
- mutterer
- obligation
- parameter
- peripeteia
- prerequisite
- provision
- provisions
- proviso
- reactionary
- rebel
- requisite
- revelation
- shocker
- sorehead
- sourpuss
- specification
- staggerer
- stipulation
- string
- surprisal
- surprise
- switch
- terms
- thunderbolt
- thunderclap
- ultimatum
- whiner
