In- is a prefix that means not. (It gives a complete demonstration using one root.) Learn vocabulary, terms, and more with flashcards, games, and other study tools. What are synonyms for contra-? Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020, Collins English Dictionary - Complete & Unabridged 2012 Digital Edition How do you use contra- in a sentence? Is It “New Years” or “New Year’s”? In opposition to something stated or expected; to the contrary. Thrive For Success, Dog Food Guide, Wilko Acrylic Paint, Fallout 76 Blood Pack Recipe, Doggyride Novel Dog Bike Trailer,