Sanguine adj. Cheerfully optimistic, hopeful, or confident: “A sanguine disposition;” “Sanguine expectations.”

Feckless adj. 1. Careless and irresponsible. “The kids were feckless during spring break.” 2. Lacking purpose or vitality; feeble or ineffective – unlikely to be successful. “It was a feckless attempt to make the company

Innocuous adj. 1. Having no adverse effect; harmless. 2. Not likely to offend or provoke to strong emotion; insipid. “The innocuous looking e-mail actually contained a virus.”

Autonomous adj. 1. Independent in mind or judgment; self-directed. 2. Not controlled by others or by outside forces; independent: “The business divisions operate autonomously.”

Mercurial adj.  1. Quick and changeable in temperament; volatile: “His mercurial temperament made him difficult to work for.”

Petulant; Petulance adj. 1. Contemptuous in speech or behavior. 2. Unreasonably irritable or ill-tempered; rude. “She was fired over her petulant attitude to our customers.”

Plethora n. A superabundance; an excessive amount or number: “Upon returning from the trip, she had a plethora of calls to make.”

Ephemeral adj. 1. Lasting for a markedly brief time: “The ephemeral nature 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.”

Dogmatic adj. 1. Expressing rigid opinions; Prone to expressing strongly held beliefs and opinions. “A dogmatic speech.” 2. Asserting opinions in a doctrinaire or arrogant manner; opinionated.