“Synonym: (Greek ‘together name’): A word similar in meaning to another. It is rare to find an exact synonymous meaning, It is usually a matter of ‘shades’ of meaning, as in: insane, mad, demented, daft, loopy, psychotic, barpoo, crazy, nutty, maghnoon, off one’s coconut, etc. See ANTONYM.”
Excerpted from: Cuddon, J.A. The Penguin Dictionary of Literary Terms and Literary Theory. New York: Penguin, 1992.