1. decrease, drop-off, lessening

a change downward

Example Sentences:
'there was a decrease in his temperature as the fever subsided'
'there was a sharp drop-off in sales'

• drop-off
• lessening

2. decrease, decrement

a process of becoming smaller or shorter

• decrement

3. decrease, decrement

the amount by which something decreases

• decrement

4. decrease, diminution, reduction, step-down

the act of decreasing or reducing something

• diminution
• reduction
• step-down

5. decrease, diminish, fall, lessen

decrease in size, extent, or range

Example Sentences:
'The amount of homework decreased towards the end of the semester'
'The cabin pressure fell dramatically'
'her weight fell to under a hundred pounds'
'his voice fell to a whisper'

• diminish
• fall
• lessen

6. decrease, lessen, minify

make smaller

Example Sentences:
'He decreased his staff'

• lessen
• minify