Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
The ! operator, also known as the NOT operator, is a unary operator that negates the value of a boolean expression. It returns true if the expression is false, and false if the expression is true.