1. Strict, rigid, rigorous, stringent imply inflexibility, severity, and an exacting quality. Strict implies great exactness, especially in the observance or enforcement of rules: strict discipline. Rigid, literally stiff or unbending, applies to that which is (often unnecessarily or narrowly) inflexible: rigid economy. Rigorous, with the same literal meaning, applies to that which is severe, exacting, and uncompromising, especially in action or application: rigorous self-denial. Stringent applies to that which is vigorously exacting and severe: stringent measures to suppress disorder.

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