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1. Made less in size or amount or degree
   - reduced

1. Decrease in size, extent, or range
   "The amount of homework decreased towards the end of the semester"
   - diminish, lessen, fall
    
2. Make smaller
   "He decreased his staff"
   - lessen, minify

See also: ablated, attenuate, attenuated, bated, belittled, cut, diminished, faded, minimised [Brit], minimized, remittent, shriveled [US], shrivelled [Brit, Cdn], shrunken, slashed, small, weakened

Type of: alter, change, change magnitude, modify

Antonym: increase, increased

Encyclopedia: Decrease