Following are all the grouch like words, in the list below.
GRUMP
100% like grouch
CROSSPATCH
100% like grouch
GRUMBLE
99.98% like grouch
CRANK
99.94% like grouch
SCOLD
99.77% like grouch
CHURL
99.64% like grouch
SOURPUSS
66.71% like grouch
CRAB
65.49% like grouch
CURMUDGEON
33.45% like grouch
GROUCHY
33.45% like grouch
GRUMPY
33.45% like grouch
GRUMPS
33.45% like grouch
GRUMBLER
33.45% like grouch
CRANKY
33.45% like grouch
GROUCHINESS
33.45% like grouch
MISANTHROPE
33.45% like grouch
COMPLAINER
33.45% like grouch
WHINER
33.45% like grouch
FUSSPOT
33.45% like grouch
GRUMPINESS
33.45% like grouch
SCROOGE
33.45% like grouch
CRABBY
33.45% like grouch
CURMUDGEONLY
33.45% like grouch
NAYSAYER
33.45% like grouch
FUSSBUDGET
33.45% like grouch
CRANKINESS
33.45% like grouch
CURMUDGEONS
33.45% like grouch
KILLJOY
33.45% like grouch
GRINCH
33.45% like grouch
PESSIMIST
33.45% like grouch
CROTCHETY
33.45% like grouch
CYNIC
33.45% like grouch
ORNERY
33.45% like grouch
NAGGER
33.45% like grouch
BUTTHEAD
33.45% like grouch
CODGER
33.45% like grouch
SNAPPISH
33.45% like grouch
SLOB
33.45% like grouch
SURLY
33.45% like grouch
NITPICKER
33.45% like grouch
WORRYWART
33.45% like grouch
MISER
33.45% like grouch
MEANIE
33.45% like grouch
MALCONTENT
33.45% like grouch
GOOFBALL
33.45% like grouch
GROUCHILY
33.45% like grouch
WEIRDO
33.45% like grouch
RASCAL
33.45% like grouch
MOANER
33.45% like grouch
GOOBER
33.45% like grouch
DORK
33.45% like grouch
CROCHETY
33.45% like grouch
OPTIMIST
33.45% like grouch
CRABBINESS
33.45% like grouch
GRUMBLY
33.45% like grouch
CANTANKEROUS
33.45% like grouch
MUPPET
33.45% like grouch
FOGY
33.45% like grouch
SLACKER
33.45% like grouch
PUTZ
33.45% like grouch
CHATTERBOX
33.45% like grouch
SCOWL
33.45% like grouch
PRISS
33.45% like grouch
RANTER
33.45% like grouch
PRIG
33.45% like grouch
GRIPER
33.45% like grouch
HARRIDAN
33.45% like grouch
GEEZER
33.45% like grouch
SNIPPY
33.45% like grouch
HUFFY
33.45% like grouch
GREMLIN
33.45% like grouch
INGRATE
33.45% like grouch
SPAZ
33.45% like grouch
KNUCKLEHEAD
33.45% like grouch
HATER
33.45% like grouch
BLOCKHEAD
33.45% like grouch
WINO
33.45% like grouch
LOUDMOUTH
33.45% like grouch
YELLER
33.45% like grouch
CHATTERER
33.45% like grouch
GALOOT
33.45% like grouch
BLABBERMOUTH
33.45% like grouch
SNARLY
33.45% like grouch
PEEVISH
33.45% like grouch
IRRITABLE
33.45% like grouch
SULKING
33.45% like grouch
WHINEY
33.45% like grouch
JACKASS
33.45% like grouch
MOTORMOUTH
33.45% like grouch
MOPEY
33.45% like grouch
LAZYBONES
33.45% like grouch
SKINFLINT
33.45% like grouch
DUFFER
33.45% like grouch
PRAT
33.45% like grouch
SMILEY
33.45% like grouch
SCOWLING
33.45% like grouch
SCATTERBRAIN
33.45% like grouch
FOGEY
33.45% like grouch
DWEEB
33.45% like grouch
TIGHTWAD
33.45% like grouch