mugsomeoneoff
phrasal verbwithmugverb[T]uk/mʌɡ/us/mʌɡ/-gg-
UKinformal
to make someoneappearstupid,especiallybydeceivingthem ortreatingthembadlyin arelationship:
RebeccaslammedLuke formuggingher off.
Ifeellike I've beenmuggedoff.
Disloyalty, betrayal & treason
- adulterous
 - backstabber
 - betrayal
 - betrayer
 - break ranksidiom
 - chicane
 - deserter
 - desertion
 - faithless
 - faithlessly
 - faithlessness
 - false
 - fifth column
 - sellout
 - stabsomeonein the backidiom
 - tergiversation
 - throwsomeoneto the lionsidiom
 - throwsomeoneunder the busidiom
 - treacherous
 - treasonable