Breadcrumb Home > Thesaurus > A Synonyms of adder Find synonyms for: Noun 1. adder, calculator, reckoner, figurer, estimator, computer usage: a person who adds numbers 2. adder, calculator, calculating machine usage: a machine that adds numbers 3. adder, common viper, Vipera berus, viper usage: small terrestrial viper common in northern Eurasia WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of adder (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: supertonic Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language