Abstruse. Hidden, difficult, recondite, profound, deep, curious, occult, dark, obscure, mystical, hard, vague, indefinite, mysterious, abstract, transcendental.
Ant. Patent, simple, obvious, trite, intelligible, manifest, lucid, clear, easy, plain, popular, superficial.
Absurd. Ludicrous, monstrous, nonsensical, preposterous, senseless, ridiculous, foolish, irrational, wild, unreasonable.
Ant. Sensible, rational, reasonable, logical, wise, sagacious, sound, substantial, philosophical, reflective, consistent, true.
Absurdity. Unreasonableness, irrationality, foolishness, folly, fatuity, idiocy, extravagance, drivel.
Ant. Reason, possibility; truism, axiom, maxim, adage.
Abundance. Profusion, wealth, affluence; flow, flood, overflow; copiousness, fertility, richness, largeness, store, plenty, exuberance, plenteousness.
Ant. Scarcity, deficiency, rarity, scantiness, dearth, failure, poverty.
Abundant. Abounding, flowing, plentiful, liberal, bountiful, sufficient, lavish, plenteous, much, copious, replete, full, teeming.
Ant. Rare, scarce, scant, deficient, insufficient, short, niggardly, sparing, impoverished, dry, drained.