gazump - definition and synonyms

verb [transitive] British informal 

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/ɡəˈzʌmp/
present tense
I/you/we/theygazump
he/she/itgazumps
present participlegazumping
past tensegazumped
past participlegazumped
  1. if you are gazumped, someone who had agreed to sell their house to you sells it to someone else for more money