consummate - definition and synonyms

verb [transitive] formal 

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/ˈkɒnsəmeɪt/
present tense
I/you/we/theyconsummate
he/she/itconsummates
present participleconsummating
past tenseconsummated
past participleconsummated
  1. 1
    to make a marriage legal by having sex for the first time
    1. a.
      to have sex for the first time in a relationship