Synonyms for Avoid (same or very similar meaning)
WordNet sense 1 (declare invalid):
annul, invalidate, nullify, quash, voidWordNet sense 2 (prevent the occurrence of; prevent from happening):
avert, debar, deflect, obviate, ward off, fend off, head off, stave offWordNet sense 3 (refrain from certain foods or beverages):
keep offFrom the ODE community, based on WordNetadd/edit