1. (noun) a sudden sharp decrease in some quantity

• dip
• drop
• fall

1. (noun) a sudden sharp decrease in some quantity

• correction
• voltage drop

1. (noun) the ideal falling motion of something subject only to a gravitational field

• drop
• fall

2. (noun) a sudden sharp decrease in some quantity

• decrease
• decrement

1. (noun) a sudden sharp decrease in some quantity

• decrease
• diminish
• fall
• lessen
• drop