Completer

Part of speech: noun

Definitions

1. A person who finishes a task or makes something whole by adding missing parts
2. An individual responsible for bringing a project or activity to its end or full completion
3. Someone who completes a process or set by ensuring all elements are included and finalized

Etymology: "Completer" is a plain formation: the verb "complete" with the agent suffix "-er," meaning one who completes or finishes something. The suffix itself has a long pedigree, arriving in English through Old French "-ier" from Latin "-arius," a common way of naming a person by occupation or role, as in "baker" or "farmer." Gardeners and bakers did not need a special word for their trades, but English speakers kept adding "-er" to new verbs, which is why the ending is so productive. The source also gives a second route for the same spelling. Alongside the verb, "complete" can be read as the adjective "complete," and "-er" attached to an adjective produces a noun for one who has that quality, so the two routes meet in the same form. Either way, the word is built entirely from English parts, with no borrowed root behind it.

Synonyms: finisher, finalizer, concluder, accomplisher, achiever

Antonyms: initiator, starter, beginner, incompleter, abandoner