consummate

First attested in the beginning of the 15th century, in Middle English; inherited from Middle English consummat(e) (“(past participle) fulfilled, completed; (adjective) perfect, consummate”), borrowed from Latin cōnsummātus, perfect passive participle of cōnsummō (“to sum up, finish, complete”) (see -ate (adjective-forming suffix)), from con- (“together”) + summa (“a sum”) + -ō (verb-forming suffix); see sum, summation. Common participial usage up until Early Modern English.