stringent, thorough, strict, intensive, exacting, exhaustive, grueling, meticulous, diligent, arduous, strenuous, extensive, vigorous, scrupulous, comprehensive, regimented, standardized, painstaking, robust, rigid, laborious, methodical, intense, continuous improvement, lengthy, systematic, prescriptive, iterative, conscientious, tedious, careful, sophisticated, due diligence, standard, disciplined, tortuous, mandatory, restrictive, systemized, individualized, proctored, subjective, assiduous, onerous, psychometric, yearlong, methodic, boot camp, tougher, torturous, continuous, exhausting, continual, repeatable, thoughtful, selective, detailed, successful, rote, behavior modification, certified, cursory, challenging, straightforward, completive, competitive, polygraphic, toilsome, transparent, labor intensive, evaluative, accredited, consistent, proscriptive, voluntary, summative, structured, qualitative, holistic, relentless, fastidious, gruelling, ethical, judicious, uncompromising, evenhanded, prudent, individualised, analytical, learnable, physical, proper, routine, toughened, quantitative, credible, prestigious, costly, pedantic, systematic desensitization, empirical, intrusive, stricter, heuristic, rigourous, axiomatic, deductive, formal, mathematical, semiquantitative, bayesian, conventional, econometric, probabilistic

abrasive, acid test, ascesis, ascetic, ascetical, asceticism, bluea, catechetic, catechistic, drastic, formalised, formalistic, formalized, harsh, iron fist, puritan, puritanic, puritanical, rigorously, strictly, unexacting

brutal, cruel, demanding, exact, hard, tight, unkind