What is "call a spade a spade"

vb. (context idiomatic English) To speak the truth; to say things as they really are.

To "call a spade a spade" is a figurative expression which refers to calling something "as it is", that is, by its right or proper name, without "beating about the bush"—being outspoken about it, truthfully, frankly, and directly, even to the point of being blunt or rude, and even if the subject is considered coarse, impolite, or unpleasant. The idiom originates in the classical Greek of Plutarch's Apophthegmata Laconica, and was introduced into the English language in 1542 in Nicolas Udall's translation of the Apophthegmes, where Erasmus had seemingly replaced Plutarch's images of "trough" and "fig" with the more familiar "spade." The idiom has appeared in many literary and popular works, including those of Oscar Wilde, Charles Dickens, W. Somerset Maugham, and Jonathan Swift.