Pertaining to, or used in, conversation, esp. common and familiar conversation; conversational; hence, unstudied; informal; as, colloquial intercourse; colloquial phrases; a colloquial style.

referring to an expression or language use that is appropriate in informal situations but not in formal ones. referring to an expression or style that is considered old- fashioned or folksy, as Aw, shucks. n. colloquialism. combining form a bound base or root designed to be combined with another combining form or word to form a new word, as bio- and -graphy of biography. Note: Combining forms are most commonly found in words derived from Latin and Greek. Through the linguistic process of clipping, some combining forms become words in themselves, as bio, metro, and porno.

characteristic of informal spoken language or conversation; "wrote her letters in a colloquial style"; "the broken syntax and casual enunciation of conversational English"

conversational, informal language

Informal diction that reflects casual conversational language and often includes slang expressions.

describes a variety of a language used in informal speaking situations.

adj. containing the words and phrases that are used only in everyday talk; related to ordinary, conversational language usage.

informal speech