Breadcrumb Home > Thesaurus > J Synonyms of j Find synonyms for: Noun 1. joule, J, watt second, work unit, heat unit, energy unit usage: a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second 2. J, j, letter, letter of the alphabet, alphabetic character usage: the 10th letter of the Roman alphabet WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of j (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: panache Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language