THESAURUS
permissive
accommodating, accordant, acquiescent, admissive, affable, affirmative, agreeable, agreeing, allowing, amiable, approving, assenting, benevolent, benign, benignant, broad-minded, careless, complaisant, compliable, compliant, conditional, consentient, consenting, content, culpably negligent, decent, derelict, eager, easy, easygoing, endorsing, favorable, freethinking, generous, gracious, imperative, impotent, imprecise, inadvertent, inattentive, indicative, indifferent, indulgent, jussive, kind, kindly, laissez-faire, latitudinarian, lax, lenient, liberal, libertarian, libertine, loose, mode, mood, neglectful, neglecting, negligent, noninterfering, nonprohibitive, nonrestrictive, nothing loath, obligative, obliging, off-guard, open-minded, optative, overindulgent, overly
permissive, overpermissive, permitting, potential, procrastinating, prompt, ratifying, ready, relaxed, remiss, sanctioning, scamping, skimping, slack, slighting, slipshod, sloppy, slurring, soft, subjunctive, submissive, suffering, tolerant, tolerating, unbigoted, uncircumspect, ungrudging, unguarded, unloath, unprohibitive, unrefusing, unreluctant, unrestrained, unrigorous, unwary, unwatchful, weak, willing
ROGET THESAURUS
permissive
Permission
N
permission, leave, allowance, sufferance, tolerance, toleration, liberty, law, license, concession, grace, indulgence, favor, dispensation, exemption, release, connivance, vouchsafement, authorization, warranty, accordance, admission, permit, warrant, brevet, precept, sanction, authority, firman, hukm, pass, passport, furlough, license, carte blanche, ticket of leave, grant, charter, patent, letters patent, permitting,
permissive, indulgent, permitted, patent, chartered, permissible, allowable, lawful, legitimate, legal, legalized, licit, unforbid, unforbidden, unconditional, by leave, with leave, on leave, speciali gratia, under favor of, pace, ad libitum, by all means, yes, avec permissin, brevet d'invention.