decrease

From Middle French 'decreiss-', variant of 'decreistre', from Latin 'decreascere': 'de-' (down) + 'creascere' (to grow).

NOUN (1)

[/dɪˈkriːs/^en-US]

減少 literal / 削減 formal / 減り informal / 概念の文 untranslatable (The noun 'decrease' can refer to a process or state that doesn't translate directly into a single noun in Japanese; it often requires context.)

Synonyms reduction formal , diminution formal , cutback informal

Antonyms increase

A reduction in the size, amount, quantity, or intensity of something.

plural
decreases

There has been a significant decrease in unemployment rates this quarter. — This shows a reduction in quantity.
The doctor noted a decrease in the patient's symptoms after starting the medication. — This shows a reduction in intensity.
A sudden decrease in temperature led to an early frost. — This shows a reduction in a measure.

VERB (1)

[/dɪˈkriːs/^en-US]

減少する literal / 減らす / 削減する formal / 概念の文 untranslatable (The verb 'decrease' can refer to an action that doesn't translate directly into a single verb in Japanese; it often requires context.)

Synonyms diminish , lessen , reduce

Antonyms increase

To become less in size, amount, quantity, or intensity; or to make something less in size, amount, quantity, or intensity.

regular

present_participle	simple_past	simple_present
decreasing	decreased	decreases

The company plans to decrease its carbon footprint by 20% over the next five years. — This shows actively making something smaller.
As the sun sets, the light outside begins to decrease gradually. — This shows something passively becoming smaller.
We need to decrease the volume before it disturbs the neighbors. — This shows actively making something smaller.