Specious rhymes with:
facetious, ambitious, anxious, atrocious, audacious, auspicious, capacious, capricious, cautious, ceraceous, confucius, conscientious, conscious, contentious, crustaceous, delicious, efficacious, expeditious, facetious, factitious, fallacious, ferocious, fictitious, flirtatious, fractious, gracious, hellacious, herbaceous, horatius, ignatius, infectious, injudicious, judicious, loquacious, lucius, malicious, mendacious, moshus, nauseous, noxious, nutritious, obnoxious, ostentatious, overambitious, pernicious, perspicacious, precious, precocious, predaceous, pretentious, propitious, proteinaceous, rambunctious, repetitious, salacious, sebaceous, seditious, semiprecious, spacious, subconscious, supercalifragilisticexpealidoshus, superstitious, surreptitious, suspicious, tenacious, tendentious, unconscious, unpretentious, vexatious, vicious, vivacious, voracious
Specious sounds like:
saab's, sab's, sabas, sabbagh, safeco, safehouse, safes, safeway's, safko, saps, sauvage, sauvageau, savage, savages, savaiko, savas, save's, saves, savich, savickas, savikas, savko, savoca, scabs, scavuzzo, schabes, schepis, schiavo's, schipke, schoepke, schubach, schupak, schupbach, schwab's, schwebach, schwebke, schweppes, scoffs, scoops, scopes, scopic, seabaugh, seabeach, seabees, sebaceous, sebek, seebach, seebeck, seepage, seeps, sefcik, sepich, sepik, sepsis, sevcik, sevick, sfuzzi, shabazz, shabazz's, shakeups, shapes, shaves, sheaves, shebek, sheep's, sheepish, sheeps, ship's, shipes, shipp's, shipps, ships, ships', shipwash, shives, shockwaves, shoebox, shop's, shopko, shoppes, shops, shoves, showbiz, showbuzz, showpiece, sieves, sifco, sigafoos, sipes, sipos, sips, sivak, skibicki, skiffs, skipjack, skipjack's, skipjacks, skippa's, skips, skopje, skufca, skybox, skyboxes, soapbox, soaps, sobczak, sobczyk, sobeck, sobecki, sobek, sobiech, sobieski, sobkowiak, sobs, sofas, sofia's, sophie's, sopko, sops, soup's, soups, space, spacek, spaces, spacey, spacious, spack, spago, spak, spake, spas, spasso, spaugh, speak, speake, speakes, speakes's, speaks, speas, spease, spec, species, species', speck, specks, specs, speece, speech, speeches, spees, speich, spevak, spews, spic, spice, spices, spicey, spicuzza, spicy, spies, spiess, spiewak, spike, spikes, spiky, spisak, spivack, spivak, spiwak, spock, spoke, spokes, spoofs, spook, spooks, spooky, spouse, spouse's, spouses, spy's, squibb's, sub's, subic, subs, subs's, subways, suffice, suffices, suffix, suffuse, suffuses, supak, suppes, suppose, supposes, suspicious, svec, swabs, swapes, swapo's, swaps, sweeps, swipes, swoops, swopes, sybase, sybase's