Ancestor, Announcer, Antecedent, Barrack, Beachhead, Bridgehead, Bug, Case, Chaff, Chuck, Contradict, Course, Cover, Decline, Deny, Deride, Despise, Disapprove, Discard, Disclaim, Discount, Discover, Disdain, Dismiss, Disown, Disregard, Do, Examine, Except, Exclude, Explore, Explorer, Eye, Eyeball, Find, Fireguard, Flout, Follow, Forebear, Forefront, Forerunner, Forswear, Front, Guide, Harbinger, Herald, Ignore, Innovator, Inspect, Investigate, Jab, Jape, Jeer, Track, Transit, Traverse, Twit, Uncover, Van, Vanguard, View, Voyage, Waive, Watch, Watcher, Watchman, Argus, Abhor, Abjure, Leader, Line, Locate, Lookout, Lout, Measure, Messenger, Mock, Observe, Operative, Outpost, Overpass, Pathfinder, Patrol, Peep, Perambulate, Picket, Pioneer, Ply, Point, Pooh, Precedent, Precursor, Predecessor, Probe, Quiz, Rally, Range, Rebuff, Recant, Refuse, Regard, Reject, Renounce, Repel, Repudiate, Repulse, Research, Revile, Ridicule, Scoff, Scorn, Scour, Sentinel, Sentry, Slam, Slight, Sneer, Spearhead, Spotter, Spurn, Spy, Study, Survey, Sweep, Swipe, Taunt