calumniator
detractor
slanderer
depreciator
disparager
knocker
amoebae
aspersion
begetter
buccaneering
carper
caviller
effort
food-quest
fosterer
giaour
hard-heartedness
head-hunter
maligner
millimite
misspelling
nibbler
niggle
one-seventh
overthrew
popularizer
reviver
snub
visualisation
whatever-it-is