1.  labored(s = adj.all) laboured, strained - lacking natural ease; "a labored style of debating"

2.  labored(s = adj.all) heavy, laboured - requiring or showing effort; "heavy breathing"; "the subject made for labored reading"

1.  Bearing marks of labor and effort; elaborately wrought; not easy or natural; as, labored poetry; a labored style. [1913 Webster]

2.  appearing to require strong effort; as, labored breathing. [WordNet 1.5]

N  inelegance, stiffness, unlettered Muse, barbarism, slang, solecism, mannerism, euphuism, fustian, cacophony, words that break the teeth, words that dislocate the jaw, marinism, inelegant, graceless, ungraceful, harsh, abrupt, dry, stiff, cramped, formal, guinde, forced, labored, artificial, mannered, ponderous, awkward, uncourtly, unpolished, turgid, affected, euphuistic, barbarous, uncouth, grotesque, rude, crude, halting, offensive to ears polite, Spoken Language.

N  preparation, providing, provision, providence, anticipation, precaution, preconcertation, predisposition, forecast, rehearsal, note of preparation, arrangement, clearance, adjustment, tuning, equipment, outfit, accouterment, armament, array, ripening, maturation, evolution, elaboration, concoction, digestion, gestation, batching, incubation, sitting, groundwork, first stone, cradle, stepping-stone, foundation, scaffold, scaffolding, echafaudage, training, inurement, novitiate, cooking, cookery, brewing, culinary art, tilling, plowing sowing, semination, cultivation, preparedness, readiness, ripeness, mellowness, maturity, un impromptu fait a loisir, preparer, trainer, pioneer, trailblazer, avant-courrier, avant-coureur, voortrekker, sappers and miners, pavior, navvy, packer, stevedore, warming pan, preparing, in preparation, in course of preparation, in agitation, in embryo, in hand, in train, afoot, afloat, on foot, on the stocks, on the anvil, under consideration, brewing, batching, forthcoming, brooding, in store for, in reserve, precautionary, provident, preparative, preparatory, provisional, inchoate, under revision, preliminary, prepared, in readiness, ready, ready to one's band, ready made, ready cut and dried: made to one's hand, handy, on the table, in gear, in working order, in working gear, snug, in practice, ripe, mature, mellow, pukka, practiced, labored, elaborate, highly-wrought, smelling of the lamp, worked up, in full feather, in best bib and tucker, in harness, at harness, in the saddle, in arms, in battle array, in war paint, up in arms, armed at all points, armed to the teeth, armed cap a pie, sword in hand, booted and spurred, in utrumque paratus, semper paratus, on the alert, at one's post, in preparation, in anticipation of, against, for, abroach, a bove majori discit arare minor, looking before and after, si vis pacem para bellum.