Find 253 different ways to say INCREASE, along with antonyms, related words, and example sentences at Thesaurus.com. INCREASE definition: to make greater, as in number, size, strength, or quality; augment; add to. See examples of increase used in a sentence. The noun increase indicates growth of something that gets bigger in number or volume. When used as a verb, it means the act of growing or gaining more. However it's used, it refers to something that has gotten bigger. Anything that can add on can increase. 1. to make greater, as in number, size, strength, or quality; augment: to increase one's knowledge. 2. to become greater, as in number, size, strength, or quality. 3. to multiply by propagation. n. 4. growth or augmentation in size, strength, or quality. 5. the act or process of increasing. INCREASE definition: 1. to become larger in amount or size, or to make something do this: 2. a rise in the amount or…. Learn more. INCREASE meaning: 1. to become larger in amount or size, or to make something do this: 2. a rise in the amount or…. Learn more. The meaning of INCREASE is to become progressively greater (as in size, amount, number, or intensity). How to use increase in a sentence. Synonym Discussion of Increase. To increase means to make greater, as in quantity, extent, degree: to increase someone's salary; to increase the velocity; to increase the (degree of ) concentration. Percentage increase calculator finds the increase from one value to another as a percentage of the first value. Shows you how to find percentage increase with percent increase formula. Some common synonyms of increase are augment, enlarge, and multiply. While all these words mean to make or become greater, increase used intransitively implies progressive growth in size, amount, or intensity; used transitively it may imply simple not necessarily progressive addition.