1. (verb)conflict, run afoul, infringe, contravene go against, as of rules and laws Synonyms: infringe, conflict, encroach, run afoul, contravene, impinge, negate, contradict
2. (verb)encroach, infringe, impinge advance beyond the usual limit Synonyms: infringe, conflict, run afoul, entrench, contravene, trench, encroach, impinge