Twos is a word commonly used to describe a pair or two items together. Synonyms for twos include duo, couple, pair, twosome, double, set of two, dyad, brace, and duet. These words can be used interchangeably depending on the context in which they are being used. For example, when referring to a duo of two people singing together, the word duet is most appropriate. Likewise, when talking about a pair of shoes, the word pair works well. Whatever the situation or subject matter, there are always multiple words that can be used in place of twos to add variety and depth to your writing or conversation.