Synonyms for Assist (same or very similar meaning)
WordNet sense 1 (give help or assistance; be of service):
aid, helpWordNet sense 2 (work for or be a servant to):
attend, serve, attend to, wait onWordNet sense 3 (the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose):
assistanceFrom the ODE community, based on WordNetadd/edit