rigorous Definition

stringent, strict, brutal, harsh, hard, tight, cruel, demanding, exact, unkind, thorough, rigor, intensive, exacting, meticulous, diligent, arduous, strenuous, extensive, vigorous, scrupulous, painstaking, robust, rigid, methodical, stricter, intense, systematic, conscientious, careful, disciplined, restrictive, assiduous, onerous, stringency, thoughtful, detailed, challenging, consistent, fastidious, uncompromising, prudent, proper, aggressive, tough, burdensome, stiff, inflexible, austere, daunting, lax, precise, draconian, ironclad, accurate, authoritative, conscientiously, serious, stern, strictly, strong, compelling, coherent, heavy, delicate, resolute, severe, solid, rigour, forceful, orderly, drastic, lustration, frugal, powerful, high, economical, grim, narrow, critical, intransigent, cold, sound, thrifty, neat, firm, stark, inaccurate, close, bitter, consequent, faithful, criminal, range, grave, ankara, flour, hard-hitting, in-depth,