👉 Presumptive is a word in English that refers to a statement or argument made without proof, often used as an adverb. It means "to assume" or "to rely on." For example: 1. She didn't get the job because she was presumptuous about it. 2. The doctor presumes that her condition will improve with time. Presumptive is a word in English that refers to a statement or argument made without proof, often used as an adverb. It