Breadcrumb Home > Thesaurus > U Synonyms of uptime Find synonyms for: Noun 1. uptime, time period, period of time, period usage: a period of time when something (as a machine or factory) is functioning and available for use WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of uptime (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: hagiography Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language