1. (v. t.) To make high; to raise higher; to elevate.

2. (v. t.) To carry forward; to advance; to increase; to augment; to aggravate; to intensify; to render more conspicuous; -- used of things, good or bad; as, to heighten beauty; to heighten a flavor or a tint.

accelerate add to agent provocateur aggrandize aggravate amplify annoy augment beef up better blow up boost build build up buoy up cast up complicate compound concentrate condense consolidate deepen deteriorate double elevate embitter enhance enlarge erect escalate exacerbate exaggerate exasperate expand extend heat up heave heft heist hike hoick hoist hold up hop up hot up improve increase intensify irritate jazz up jerk up key up knock up levitate lift lift up lob loft magnify make acute make complex make worse mount multiply perk up provoke raise raise up ramify rear rear up redouble reinforce rise rouse set up sharpen sky soup up sour step up stick up strengthen supplement throw up triple up upbuoy upcast upheave uphoist uphold uplift upraise uprear upsurge upthrow wax whet worsen