facilitate (v.)

• advance
• advantage
• aid
• assist
• boost
• ease
• encourage
• expedite
• explain
• favor
• forward
• further
• grease
• hasten
• help
• loose
• lubricate
• mediate
• oil
• promote
• quicken
• serve
• simplify
• smooth
• speed
• subserve
• unbar
• unblock
• unclog