key up (?.)

• accelerate
• aggravate
• annoy
• arouse
• awake
• awaken
• beef up
• blow the coals
• blow up
• call forth
• call up
• complicate
• concentrate
• condense
• consolidate
• deepen
• double
• enhance
• enkindle
• enrage
• exacerbate
• exaggerate
• excite
• fan
• fan the fire
• fan the flame
• feed the fire
• fire
• flame
• foment
• frenzy
• heat
• heat up
• heighten
• hop up
• hot up
• impassion
• incense
• incite
• inflame
• infuriate
• intensify
• jazz up
• kindle
• lather up
• light the fuse
• light up
• madden
• magnify
• make complex
• move
• overexcite
• ramify
• redouble
• reinforce
• rouse
• set astir
• set fire to
• set on fire
• sharpen
• soup up
• steam up
• step up
• stir
• stir the blood
• stir the embers
• stir the feelings
• stir up
• strengthen
• summon up
• triple
• turn on
• wake
• wake up
• waken
• warm
• warm the blood
• whet
• whip up
• work into
• work up