DECIDING definition: 1. A deciding event or action is more important than the rest because the final result, decision…. Learn more. adjective having the power or quality of deciding “cast the deciding vote” synonyms: determinant, determinative, determining decisive Noun deciding (usually uncountable, plural decidings) The act of making a decision. Synonyms for DECIDING: decisive, conclusive, last, definitive, determinative, clear, determinate, definite; Antonyms of DECIDING: unclear, indecisive, questionable, doubtful, inconclusive, problematic, debatable, moot The meaning of DECIDING is that decides : decisive. How to use deciding in a sentence. Define deciding. deciding synonyms, deciding pronunciation, deciding translation, English dictionary definition of deciding. adj. Determining or able to determine an outcome: the deciding factor; the deciding vote. Learn what deciding means with clear definitions, pronunciation, synonyms, and real-world examples. Simple explanations to help you use deciding correctly. DECIDING meaning: 1. A deciding event or action is more important than the rest because the final result, decision…. Learn more. This page brings together the meanings, usage examples, pronunciation, and translations of deciding. Deciding is the act of making a choice or coming to a resolution after careful thought and consideration of various options or possibilities. DECIDING definition: that settles a question or dispute or leads to a final decision; determining; decisive. See examples of deciding used in a sentence.