act for, advance, advantage, aid, assist, be instrumental, boost, clear the way, conduce to, contribute to, ease, encourage, expedite, explain, favor, forward, further, go between, grease, grease the ways, grease the wheels, hasten, help, help along, lend wings to, loose, lubricate, make clear, make for, make way for, mediate, minister to, oil, open the way, open up, pave the way, prepare the way, promote, push forward, put forward, quicken, remove friction, run interference for, serve, set forward, simplify, smooth, smooth the way, soap the ways, speed, subserve, unbar, unblock, unclog, unjam