Unwearying

Part of speech: adjective

Definitions

1. Not becoming tired or fatigued; showing persistent effort or attention without diminishment of vigor or enthusiasm
2. Showing constant energy and dedication without becoming fatigued or losing vigor in sustained effort
3. Marked by relentless persistence and enduring strength that resists fatigue or diminished commitment

Etymology: Unwearying is a plain compound: the prefix "un-" meaning "not" joined to "wearying," the adjective formed from "wearying," the present participle of "weary." The prefix descends from the same ancient negative found in many languages, passing through Proto-Germanic and Old English into Middle English, where it was already the usual way to make a word's opposite. English has never needed a special word for "not tiring" beyond this simple combination. The result describes someone or something that does not wear out, whether a person who keeps going through long labour or a force that never becomes tedious. Because the parts are so transparent, the word is less a coinage with a story than a demonstration of how readily English builds negatives from its own vocabulary.

Synonyms: tireless, unflagging, indefatigable, persistent, unrelenting

Antonyms: weary, tiring, fatigued, exhausted, sluggish