DECIDING definition: that settles a question or dispute or leads to a final decision; determining; decisive. See examples of deciding used in a sentence. Deciding is the act of making a choice or coming to a resolution after careful thought and consideration of various options or possibilities. It involves analyzing the potential outcomes or consequences associated with each option and then selecting the one that appears most desirable or beneficial based on those evaluations. 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. DECIDING meaning: 1. A deciding event or action is more important than the rest because the final result, decision…. Learn more. DECIDING definition: 1. A deciding event or action is more important than the rest because the final result, decision…. Learn more. The meaning of DECIDING is that decides : decisive. How to use deciding in a sentence. Synonyms for DECIDING: decisive, conclusive, last, definitive, determinative, clear, determinate, definite; Antonyms of DECIDING: unclear, indecisive, questionable, doubtful, inconclusive, problematic, debatable, moot 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. deciding in American English (dɪˈsaidɪŋ) adjective that settles a question or dispute or leads to a final decision; determining; decisive.