Following are all the underreactor like words, in the list below.
REACTER
100% like underreactor
UNDERRESPONDER
100% like underreactor
UNDERCOOKER
99.99% like underreactor
UNDERUSER
99.99% like underreactor
UNDERPREDICTOR
99.98% like underreactor
UNDERFUNCTIONER
99.98% like underreactor
UNDERDOER
99.98% like underreactor
UNDERESTIMATOR
99.97% like underreactor
UNDERINVESTOR
99.97% like underreactor
REACTOR
99.96% like underreactor
UNDERREADER
99.96% like underreactor
UNDERREPORTER
99.96% like underreactor
MISUNDERSTANDER
99.95% like underreactor
UNDERVALUER
99.95% like underreactor
RETORTER
99.94% like underreactor
RESPONDER
99.94% like underreactor
UNDERSAVER
99.94% like underreactor
UNDERWORKER
99.93% like underreactor
COUNTERAGITATOR
99.93% like underreactor
OVERREPORTER
99.92% like underreactor
UNDERMINER
99.92% like underreactor
OVERREACHER
99.92% like underreactor
UNDERDELIVERER
99.91% like underreactor
UNDERCUTTER
99.91% like underreactor
RETALIATOR
99.9% like underreactor
BLUNDERER
99.9% like underreactor
ENRAGER
99.9% like underreactor
OVERACTOR
99.89% like underreactor
REFRAINER
99.89% like underreactor
MISPERCEIVER
99.88% like underreactor
OVERPROTECTOR
99.88% like underreactor
UNDERSPENDER
99.88% like underreactor
RETREATER
99.87% like underreactor
REENACTOR
99.87% like underreactor
MISMANAGER
99.86% like underreactor
MISFIRER
99.86% like underreactor
MISBEHAVER
99.86% like underreactor
UNDERPAYER
99.85% like underreactor
COUNTERPLANNER
99.85% like underreactor
REPRESSER
99.84% like underreactor
REJECTER
99.84% like underreactor
UNDERSELLER
99.84% like underreactor
UNDERVOTER
99.83% like underreactor
OVERRUNNER
99.83% like underreactor
HESITATER
99.82% like underreactor
DISAPPROVER
99.82% like underreactor
VACILLATOR
99.82% like underreactor
COUNTERPROTESTOR
99.81% like underreactor
EXASPERATER
99.81% like underreactor
PASSIVE AGGRESSOR
99.8% like underreactor
COUNTERACTOR
99.8% like underreactor
FLUSTERER
99.8% like underreactor
OVERHEARER
99.79% like underreactor
COUNTERPLOTTER
99.79% like underreactor
COUNTERRESPONDENT
99.78% like underreactor
DEPRECATOR
99.78% like underreactor
OVERCHARGER
99.78% like underreactor
EXASPERATOR
99.77% like underreactor
BACKTALKER
99.77% like underreactor
MISCONCEIVER
99.76% like underreactor
DISARRANGER
99.76% like underreactor
OVERSTEPPER
99.76% like underreactor
DEREGULATOR
99.75% like underreactor
MISJUDGER
99.75% like underreactor
UNDERLINER
99.74% like underreactor
MUTTERER
99.74% like underreactor
UNLEARNER
99.74% like underreactor
REVENGER
99.73% like underreactor
OUTRAGER
99.73% like underreactor
MISTAKER
99.72% like underreactor
REGENERATOR
99.72% like underreactor
SNUBBER
99.72% like underreactor
OVERCOMMITTER
99.71% like underreactor
REPROBATER
99.71% like underreactor
UNDERGOER
99.7% like underreactor
UNSUBSCRIBER
99.7% like underreactor
SUBVERTER
99.7% like underreactor
GLOWERER
99.69% like underreactor
REFUSER
99.69% like underreactor
SABOTAGER
99.68% like underreactor
OVERBIDDER
99.68% like underreactor
MISREPORTER
99.68% like underreactor
MISCONSTRUER
99.67% like underreactor
DISRESPECTER
99.67% like underreactor
MISINFORMER
99.66% like underreactor
REFUSANT
99.66% like underreactor
DISOBEYER
99.66% like underreactor
UNDERSTATER
99.65% like underreactor
DERANGER
99.65% like underreactor
OVERCOMPENSATOR
99.64% like underreactor
REWIRER
99.64% like underreactor
COUNTERMANDER
99.64% like underreactor
DOUBLE-CROSSER
99.63% like underreactor
AVOIDER
99.63% like underreactor
COUNTERBALANCER
99.62% like underreactor
RESENTER
99.62% like underreactor
MISLIKER
99.62% like underreactor
COUNTERTRADER
99.61% like underreactor
INTERACTOR
99.61% like underreactor
IMPROVISATOR
99.6% like underreactor