Synonyms for Breach (same or very similar meaning)
WordNet sense 1 (a personal or social separation (as between opposing factions)):
break, rift, rupture, severance
WordNet sense 2 (act in disregard of laws, rules, contracts, or promises):
offend, transgress, violate, infract, go against
WordNet sense 3 (make an opening or gap in):
gap
From the ODE community, based on WordNet
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