I. con ‧ sum ‧ mate 1 /kənˈsʌmət, kənˈsʌmɪt, ˈkɒnsəmət $ ˈkɑːnsəmət/ BrE AmE adjective [only before noun] formal
[ Date: 1400-1500 ; Language: Latin ; Origin: past participle of consummare 'to sum up, finish' , from com- ( ⇨ COM- ) + summa 'sum' ]
1 . showing a lot of skill:
a great performance from a consummate actor
He won the race with consummate ease (=very easily) .
De Gaulle conducted his strategy with consummate skill.
2 . used to emphasize how bad someone or something is:
his consummate lack of tact
The man’s a consummate liar.
—consummately adverb
II. con ‧ sum ‧ mate 2 /ˈkɒnsəmeɪt $ ˈkɑːn-/ BrE AmE verb [transitive] formal
1 . to make a marriage or relationship complete by having sex
2 . to make something complete, especially an agreement