Demanding that rules concerning behavior are obeyed and observed. The teacher was very strict about students handing in their assignments on time.
Exact or precise in the observance of rules or standards. The recipe requires strict adherence to the specified measurements for the cake to turn out correctly.
Complete or absolute, allowing no deviation or exceptions. They were under strict orders not to leave the building.
Of a relation, inequality, or subset: excluding the case of equality; sharp. The symbol '<' denotes a strict inequality where the two values cannot be equal.