decrease de‧crease 1 [dɪˈkriːs] verb [intransitive, transitive]
to go down to a lower level, or to make something do this:

• Network television viewing continues to decrease.

• The bank decreased its dividend to 15 cents from 31.25 cents a share.

— decreasing adjective [only before a noun] :

• The airline has been hurt by high fuel costs and decreasing passenger traffic.

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decreasing UK US /dɪˈkriːsɪŋ/ adjective [before noun]
becoming less: »

decreasing demand/prices/supply

Financial and business terms. 2012.