Academic IELTS (Band 8 and Above) - Decrease in Amount

extremely small in size or amount

pitifully small or inadequate

lacking in quantity, quality, or extent

lacking in adequacy or fullness

a reduction or lessening in the intensity, degree, or amount of something

to reduce the size, amount, or number of something

to subtract or take away an amount or part from a total

to place limits or boundaries on something to reduce its scope or size

to diminish in quantity or size over time

to decrease in quantity, intensity, or level over time

to gradually decline or recede

(of the oxygen level in the air) containing a lower-than-average amount of oxygen

experiencing a gradual reduction or decrease in quality, quantity, or value over time

a downward trend in a business or economical activity

to gradually reduce or decrease something by cutting away or eliminating bit by bit