spoilsports
Those ruining games
People who spoil the sport—who ruin others' fun by refusing to participate or by being overly serious, cautious, or rule-bound.
A spoilsport dampens enthusiasm: Don't be such spoilsports—it's just a game.
The singular spoilsport is more common.
Fun-spoiling person or thing
- wet-blanketSomeone who discourages enthusiasm
- party-pooperOne who kills merriment
- downerDispiriting experience or thing
- dampenerThing that reduces force
grinch · scrooge · sourpuss · grouch · curmudgeon · grump · stick-in-the-mud · fuddy-duddy
Habitual dissenter
- whinerHabitual vocal complainer
- grumblerHabitual fault-finder
- moanerOne who grumbles habitually
- pessimistOne expecting negative outcomes
cynic · critic · malcontent · negativist · defeatist · objector · protester · disapprover
One who informs on others
- snitchOne who tells authorities
- enforcerOne who ensures compliance
- informerOne who reveals secrets
- killjoyOne who dampens merriment
referee · whistleblower · busybody · meddler · interferer · blocker
buzzkill
Fun-spoiling person or thing
- wet-blanketSomeone who discourages enthusiasm
- party-pooperOne who kills merriment
- downerDispiriting experience or thing
dampener · grinch · scrooge · sourpuss · grouch · curmudgeon · grump · stick-in-the-mud · fuddy-duddy · joykiller
naysayer
Habitual dissenter
pessimist · cynic · critic · malcontent · negativist · defeatist · objector · protester · disapprover · faultfinder
tattletale
One who informs on others
killjoy · referee · whistleblower · busybody · meddler · interferer · blocker
- negativistspessimists, defeatists, doomers, doomsayers, negative Nellies
spoilsportsgood sports
Those who accept outcomes graciously
life of the party · party animals · fun-lovers · merrymakers · revelers
spoilsportsgood sports
Those who accept outcomes graciously
willing participants · sports · troopers · troupers · players
spoilsportslive wires
Highly energetic people
cheerleaders · enthusiasts · morale boosters · spirits · sparkplugs