In a decreasing list of numbers or amounts, each number or amount is less than the previous one…. Learn more. DECREASING definition: becoming less or fewer; diminishing. See examples of decreasing used in a sentence. Find 79 different ways to say DECREASING, along with antonyms, related words, and example sentences at Thesaurus.com. In a decreasing list of numbers or amounts, each number or amount is less than the previous one…. Learn more. /diˈkrisɪŋ/ IPA guide Other forms: decreasingly Definitions of decreasing adjective becoming less or smaller synonyms: To become or cause to become less or smaller, as in number, amount, or intensity. 1. The act or process of decreasing. 2. The amount by which something decreases. [Middle English decresen, from Old French decreistre, decreiss-, from Latin dēcrēscere : dē-, de- + crēscere, to grow; see ker- in Indo-European roots.] The meaning of DECREASE is to become smaller in size, amount, number, or intensity. How to use decrease in a sentence. Synonym Discussion of Decrease. What does decreasing mean? This page brings together the meanings, usage examples, pronunciation, and translations of decreasing. Decreasing refers to the process or state of becoming less, smaller, lower, or fewer in quantity, size, intensity, value, rate, level, or any other measurable entity. the act or process of decreasing; condition of being decreased; gradual reduction. a decrease in sales; a decrease in intensity. Synonyms: subsidence, decline, abatement the amount by which a thing is lessened. The decrease in sales was almost 20 percent. Synonyms for DECREASING: reducing, diminishing, shortening, lessening, shrinking, compression, contraction, curtailment; Antonyms of DECREASING: extending, stretching, extension, extensiveness, growth, prolongation, lengthiness, elongation.