mislayer
misaligner
misdealer
misteacher
misconstruer
misreader
mislabeler
misapplier
misperceiver
misdirector
misplacer
misreporter
misbehaver
misstater
misrepresenter
belittler
misunderstander
misidentifier
misdescriber
dishonourer
misjudger
misguider
mismanager
misinformer
misconceiver
deludee
misfirer
refounder
undeceiver
mishearer
mishandler
stultifier
miseducator
misnamer
beleaguerer
contorter
misspeaker
misshaper
discommender
scrupler
would lose one's head if it wasn't attached
distortionist
shambler
foister
discreditor
obviator
misappropriator
deluder
shnorrer
deplorer