Adulterate, Affirm, Animate, Arm, Arouse, Attest, Augment, Authenticate, Back, Bank, Barricade, Battle, Blockade, Bolster, Boost, Brace, Brisk, Bulwark, Buoy, Buttress, Certify, Cheer, Confirm, Contaminate, Corroborate, Corrupt, Cut, Debase, Dilute, Doctor, Document, Embattle, Embolden, Encourage, Enhance, Enliven, Enrich, Entrench, Exhilarate, Fence, Freshen, Garrison, Gird, Harden, Hearten, Increase, Invigorate, Lace, Man, Mine, Nerve, Palisade, Pollute, Prepare, Probate, Prop, Prove, Quicken, Rally, Ratify, Ready, Reassure, Recreate, Recruit, Refresh, Regale, Reinforce, Reinvigorate, Renew, Restore, Revive, Revivify, Rouse, Secure, Spike, Steel, Stiffen, Stimulate, Stir, Strengthen, Substantiate, Supplement, Support, Sustain, Temper, Toughen, Uphold, Validate, Verify, Wall, Warrant, Water