Ephemeral adj. 1. Lasting for a markedly brief time: “The ephemeralnature of fashion trends.” 2. Living or lasting only for a day, as with certain plants or insects.

Myriad adj.  Constituting a very large, indefinite number; innumerable: “The myriad snowflakes in the winter.”

Capricious adj.  Characterized by or subject to whim; impulsive and unpredictable. “He’s such a capricious boss I never know how he’ll react.”

Gregarious adj. 1. Seeking and enjoying the company of others; sociable. “She is a gregarious, outgoing person.”

Visceral adj. 1. Instinctual: proceeding from instinct rather than from reasoned thinking or intellect. “A visceral business decision.” 2. Emotional: characterized by or showing crude or elemental emotions.

Auspicious adj. Marked by success; prosperous. Suggesting a positive and successful future. “An auspicious time to purchase the stock.”

Cognitive adj. 1. Relating to the process of acquiring knowledge by the use of reasoning, intuition, or perception. 2. Having a basis in or reducible to empirical factual knowledge. “A Cognitive model for success.”

Specious adj.  1. Having the ring of truth or plausibility but actually fallacious. “A specious argument.” 2. Deceptively attractive.

Incredulous adj. 1. Skeptical; disbelieving. “Most people are incredulousof stories about flying saucers.” 2. Expressive of disbelief. “An incredulousstare.”