Umbrage n. : Shade; shadow; obscurity; hence, that which affords a shade, as a screen of trees or foliage.

Umbrage n. : Shadowy resemblance; shadow.

Umbrage n. : The feeling of being overshadowed; jealousy of another, as standing in one's light or way; hence, suspicion of injury or wrong; offense; resentment.

Example:
How many of you are sick of the Umbrage coming from the Republicants over MoveOn.org?

Taxonomy
umbrage, shade, shadow, Dictionary, Synonyms, umbra, word origin, brage, offense, rudeness, indication, suspicion, trees, resentment, Houghton Mifflin Company, blind, free online English dictionary, dictionary results.

Defination from the web:
Umbrage - Definition of Umbrage at Dictionary.com a free online dictionary with pronunciation, synonyms, and translation of Umbrage. Word of the Day and Crossword Puzzles. ... that one has been slighted," first recorded 1620; hence phrase to take umbrage at, attested from 1680. ...