Latin incrēscere, equivalent. to in-in-2 + crēscere to grow; see crescent
Anglo-French encres-, Middle French encreiss-, stem of encreistre
Middle English incresen, encresen 1275–1325
1.See corresponding entry in Unabridged expand, extend, prolong. Increase,augment,enlarge may all mean to make larger. Toincrease means to make greater, as in quantity, extent, degree:to increase someone's salary; to increase the velocity; to increase the(degree of ) concentration.Enlarge means to make greater in size, extent, or range:to enlarge a building, a business, one's conceptions.Augment, a more formal word, means to make greater, esp. by addition from the outside:to augment one's income(by doing extra work).
3.See corresponding entry in Unabridged expand, grow, develop, swell.
6.See corresponding entry in Unabridged enlargement, expansion.
1, 3.See corresponding entry in Unabridged decrease.