Antonyms for strict

accurate, absolute:

negligent, inexact, careless, undetailed, imprecise.

authoritarian:

easy-going, flexible, gentle, mild, kind, uncertain, easy, indefinite, yielding, nice, soft, amenable, tractable, inaccurate, facile, lenient, tolerant.

noun:

softhearted, amenable, genial, merciful, kind, neglectful, corrupt, agreeable, forbearing, negligent, inauthentic, kindly, invalid, slipshod, imprecise, accepting, false, affable, corrupted, complaisant, slovenly, tractable, pliant, yielding, erroneous, off, pliable, variable, untrue, compliant, gentle, responsive, mild, compromising, spoiling, untruthful, remiss, wrong, patient, incorrect, unsound, unfaithful, bland, acquiescent, careless, willing, sweet, sloppy, lenient, tender, inaccurate.