Dictionary definition · decrease
noun
- a change downward"there was a decrease in his temperature as the fever subsided"
- a process of becoming smaller or shorter
- the amount by which something decreases
- the act of decreasing or reducing something
verb
- decrease in size, extent, or range"The amount of homework decreased towards the end of the semester"
- make become smaller"He decreased his staff"
Source: Open English WordNet (CC BY 4.0).