1. Becoming less or smaller
   "The decreasing water levels in the reservoir worried local officials"
    
2. Becoming quieter
   "The decreasing volume of the music indicated the party was ending"

1. Become reduced in amount, level, intensity, or value
   "The amount of homework decreased towards the end of the semester";
   - diminish, lessen, fall, come down, go down, sink, dent
    
2. Make become smaller
   "He decreased his staff";
   - lessen, minify

See also: allargando, calando, decrescendo, depreciating, depreciative, depreciatory, detractive, diminishing, diminuendo, dwindling, falling, rallentando, rit., ritardando, ritenuto, tapering, tapering off

Type of: alter, change, change magnitude, modify

Antonym: increase, increasing

Encyclopedia: Decreasing