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Synonyms for Set Off (same or very similar meaning)

WordNet sense 1 (make up for):
cancel, offset

WordNet sense 2 (leave):
depart, part, start, set forth, take off, set out, start out

WordNet sense 3 (put in motion or move to act):
activate, actuate, spark, trigger, trip, spark off, touch off, trigger off

WordNet sense 4 (provoke or stir up):
incite, instigate, stir up

WordNet sense 5 (direct attention to, as if by means of contrast):
bring out

WordNet sense 6 (cause to burst with a violent release of energy):
detonate, explode, blow up

From the ODE community, based on WordNetadd/edit