Other forms: consummated, consummating, consummates
To consummate is to bring to completion, especially a marriage. Consummate the marriage, consummate the deal, never consummated.
The marriage sense is legal: in some jurisdictions a marriage never consummated can be annulled. As an adjective, said with the stress on the first syllable, it means supremely skilled — a consummate professional.
1verbconsummateTo bring to completion, especially a marriage.
“The two companies consummated the deal after months of talks.”
consummate is a completing.
Latin consummare means to sum up or complete — con plus summa, a total. Sum is a relative.
Latin
cōnsummātus
Middle English
consummat(e) — (past participle) fulfilled, completed; (adjective) perfect, consummate
English, today
consummate
Built from
First attested in the beginning of the 15th century, in Middle English; 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), from con- (“together”) + summa (“a sum”) + -ō; see sum, summation. Common participial usage up until Early Modern English.
Etymology from Wiktionary, CC BY-SA