decrease (decreases plural & 3rd person present) (decreasing present participle) (decreased past tense & past participle )
The verb is pronounced [PH:d][PH:I][PH:k][PH:r][PH:i][PH::][PH:s]. The noun is pronounced [PH:d][PH:i][PH::][PH:k][PH:r][PH:i][PH::][PH:s].
1 verb When something decreases or when you decrease it, it becomes less in quantity, size, or intensity.
Population growth is decreasing by 1.4% each year... V by amount
2 n-count A decrease in the quantity, size, or intensity of something is a reduction in it.
...a decrease in the number of young people out of work...