Seabee, actuate, advance guard, adventurer, airhead, alpinist, ancestor, announcer, antecedent, astronaut, avant-garde, battle line, be in front, be the front-runner, beachhead, begin, bellwether, blaze the trail, break ground, break the ice, break the trail, bridgehead, buccinator, bushwhacker, camper, climber, coin, colonial, colonist, colonizer, combat engineer, comers and goers, commuter, cosmopolite, create, cruiser, develop, discover, earliest, engineer, establish, excursionist, explorer, fare, farthest outpost, first line, forebear, forefront, foregoer, forerun, forerunner, forge ahead, found, front, front line, front rank, front runner, front-runner, frontiersman, fugleman, globe-girdler, globe-trotter, go before, goer, groundbreaker, guide, hajji, harbinger, head, head up, herald, homesteader, immigrant, inaugurate, initial, initiate, innovate, innovator, institute, introduce, introduce new blood, invent, jet set, jet-setter, journeyer, kick off, launch, lay the foundation, lay the groundwork, lead, lead off, lead runner, lead the way, leader, line, maiden, make innovations, mariner, messenger, mountaineer, neologize, nester, open up, original, originate, outguard, outpost, pacemaker, palmer, passenger, passerby, pathfinder, pilgrim, pilot, planter, point, precede, precedent, precursor, predecessor, primary, prime, put in motion, railhead, revolutionize, rubberneck, rubbernecker, sailor, sapper, sapper and miner, scout, set in motion, set off, set up, settler, show the way, sightseer, sooner, spearhead, squatter, stand first, stand in front, start, stormy petrel, straphanger, take the initiative, take the lead, take the plunge, tourer, tourist, trailblazer, trailbreaker, transient, traveler, trekker, trend-setter, trigger, tripper, usher in, van, vanguard, vaunt-courier, viator, visiting fireman, voortrekker, voyager, voyageur, wayfarer, world-traveler