Roget's Thesaurus

#773. Nonobservance

Nouns

nonobservance etc. 772; evasion, inobservance, failure, omission, neglect, laches [Law], laxity, informality. infringement, infraction; violation, transgression; piracy. retraction, retractation, repudiation, nullification; protest; forfeiture. lawlessness; disobedience etc. 742; bad faith etc. 940.

Verbs

fail, neglect, omit, elude, evade, give the go-by to, set aside, ignore; shut one's eyes to, close one's eyes to. infringe, transgress, violate, pirate, break, trample under foot, do violence to, drive a coach and six through. discard, protest, repudiate, fling to the winds, set at naught, nullify, declare null and void; cancel etc. (wipe off) 552. retract, go back from, be off, forfeit, go from one's word, palter; stretch a point, strain a point.

Adjectives

violating etc. v.; lawless, transgressive; elusive, evasive. unfulfilled etc. (fulfill) etc. 772.