1. to become smaller or fewer in size, amount, intensity, or degree
2. to make something smaller or fewer in size, amount, intensity, or degree

1. the process of becoming smaller or the amount by which something becomes smaller

Examples

• The temperature will decrease tonight.
• Sales decreased by 15% last quarter.
• The doctor told him to decrease his salt intake.
• We need to decrease our spending this month.
• There was a significant decrease in crime rates.
• The decrease in population affected local businesses.
• Traffic accidents decrease when speed limits are enforced.