Ostensible adj.  Stated or appearing to be true, but not necessarily so. Being such in appearance, plausible rather than demonstrably true or real. “The ostensible purpose of the trip was for business.”

Disingenuous adj. Not straightforward or candid; insincere or calculating.  “It was disingenuous of her to claim she had no financial interest in the company.”

Derisive (de·ri·sive) adj. Expressing contempt or ridicule; mocking or scornful. “A derisive laugh.”

Prodigious (pro·di·gious) adj. Remarkably or impressively great in extent, size, or degree. “Her prodigious sales performance resulted in a promotion.”

Bucolic (bu·col·ic) adj. Of or relating to the pleasant aspects of country life. “He retired to a more bucolic life on his farm.”

Atypical adj.  Not conforming to type; unusual or irregular. Deviating from what is usual or common or to be expected; often somewhat odd or strange. “The strong sales were atypical of the normally weak market.”

Antiquated adj.  Very old; aged. Too old to be fashionable, suitable, or useful; outmoded, obsolete. “The committee thought the marketing strategy was too antiquated to approve.”

Fortuitous adj.  Happening by accident or chance. Happening by a fortunate accident or chance. Lucky or fortunate. “The check could not have arrived at a more fortuitous time.”

Voluminous adj.  Having great volume, fullness, size, or number; ample or lengthy in speech or writing. “Voluminous paperwork.”

Reciprocity (rec·i·proc·i·ty) n A reciprocal condition or relationship. “The president’s proposal calls for full reciprocity.”