The word weatherstripping cannot be made in Words With Friends™. It is 16 letters long, too long to fit on a WordsWithFriends board (15 letters max).
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (498 words)
aeriest, aigrets, airiest, airings, airpipe, airship, airwise, angrier, anthers, antsier, apprise, arenite, argents, arising, arsheen, arshine, artiest, artsier, aspirer, aspirin, atheise, atheist, attirer, attires, earners, earnest, earring, earthen, earwigs, eastern, eighter, engrasp, enrages, entraps, entreat, entries, entwist, enwraps, epitaph, epithet, erasing, errants, ethanes, gainers, gaiters, gappers, garners, garnets, garnish, garrets, garters, gaspier, gastrin, gathers, gawpers, gearset, gestate, girners, gnasher, gnawers, grainer, granite, grantee, granter, grasper, graters, greaser, greaten, greater, greisen, gripers, gripper, grister, gritter, hairier, hairnet, hairpin, hangers, happens, happier, happing, hapters, harpers, harpies, harping, harpist, hastier, hatpins, hatters, hatting, heapers, heaping, hearers, hearing, hearten, heaters, heating, heparin, heptane, hernias, herring, hippest, hippies, hitters, hitting, igniter, ignites, inepter, inerter, inertia, ingrate, inherit, insight, inspire, instate, integer, intwist, iratest, irisate, iterate, nappers, nappies, nastier, natters, nattier, nearest, neatest, negates, neither, nephews, netters, newsier, nightie, nippers, nippier, nitrate, nitrite, nittier, nitwits, painter, pairing, panters, panther, panties, paperer, parents, pargets, parings, parsing, parsnip, parties, parting, partner, pastier, pasting, patents, patient, patines, pattern, patters, patties, patting, peatier, peeping, peering, peptise, perhaps, pertain, petites, petnaps, pettier, petting, pettish, pewters, phasing, phenate, phraser, pianist, piarist, pieties, pietist, pigpens, pigwash, pinesap, pingers, pipette, pirates, pithier, pithing, pitiers, pitting, prairie, praiser, praters, prating, prawner, preheat, prepare, presage, present, pretans, pretape, pretest, prewash, prewire, prewrap, printer, pterins, rainier, raising, rangers, rangier, ranters, rappers, rapping, raspier, rasping, ratings, ratters, rattier, ratting, rattish, reagent, reapers, reaping, rearing, rearise, regains, regears, regents, regrant, regraph, regrasp, regrate, regrets, regrips, rehangs, reheaps, rehears, reheats, rehinge, rehires, reigner, reinter, renters, repages, repaint, repairs, repaper, reparse, repaste, repeats, repents, repiner, repines, repipes, reprint, reprise, rerapes, rerents, rerinse, reshape, reshare, reshine, resight, respawn, respire, respite, restage, restain, restart, restate, resting, restrap, reswear, reswept, retains, retapes, retaste, retears, rethaws, retinas, retints, retires, retrain, retraps, retreat, retries, retwine, retwist, rewater, reweigh, rewipes, rewires, rewraps, rewrapt, rewrite, righter, ringers, rippers, ripping, sappier, sapping, searing, seating, seeping, septate, seriate, serpent, serrate, setting, shaping, sharing, sharpen, sharper, sharpie, shatter, shearer, shewing, shinier, shipper, sighter, sipping, sitting, snapper, snipper, snippet, sparing, spatter, spawner, spearer, spewier, spewing, spinier, spiring, spiting, spright, stagier, stainer, staring, starter, stating, stepper, sterane, sterner, stewing, stewpan, stinger, stipite, straint, strange, striate, striper, swapper, swatter, swearer, sweater, swiping, tangier, taperer, tapings, tappers, tapping, tapster, targets, tarnish, tarries, tarring, tartish, tastier, tasting, tawnier, tearers, tearier, tearing, teasing, tentage, tenters, tentier, tephras, ternate, terpine, terrain, terrane, testier, testing, tethers, thawing, theater, theatre, thereat, therein, threats, thwarts, tiepins, tiering, tighten, tighter, tigrish, tiniest, tinters, tintier, tinware, tippers, tippier, tipping, tipsier, tipster, tithers, tithing, trainee, trainer, traipse, transit, trapper, trasher, treater, treeing, trepans, triaene, triages, trienes, tripper, triptan, twanger, twiners, twinges, twinset, twister, wagerer, waiters, waiting, wanters, wappers, wariest, warners, warpers, warping, warring, warship, wartier, washing, waspier, wasting, waterer, wearers, wearier, wearies, wearing, wearish, weather, weeping, weigher, weights, weiners, western, wetters, wetting, wheaten, whereas, whereat, wherein, whiners, whinger, whinges, whinier, whipper, whippet, whisper, whitens, whitest, whiting, wieners, wienies, wingers, wingtip, winiest, winters, wiretap, wiriest, wirings, wishing, wispier, wisping, withers, witters, wittier, witting, wraiths, wrapper, wreathe, wreaths, wrester, wringer, writers, writhes, writing, written