Colloquialism

Definition and stakes

Portrait of Irvah Lester Winter Irvah Lester Winter,  Public Speaking: Principles and Practice

“ The language of a speech is largely determined by the man's habit of mind, the nature of his subject, and the character of his audience. Students often err in one of two directions, either by being too bookish in language or by allowing the other extreme of looseness, weak colloquialism in words, and formless monotony of sentence, with the endless repetition of the connective "and." ”
Source: Gutenberg

Huber Gray Buehler,  Practical Exercises in English

“ The notes which precede the exercises are only hints; for
full discussions of the principles involved the student must consult
larger works.
SOLECISMS: Constructions not English, commonly called cases of "bad grammar" or "false syntax": as, "She invited Mrs. Roe and I to go driving with her." "Solecism" is derived from Soli, the name of a Greek tribe who lived in Cilicia and spoke bad Greek.
SLANG is a general name for current, vulgar, unauthorized language. It may take the form of barbarism, impropriety, or solecism.
A COLLOQUIALISM is an expression peculiar to familiar conversation.
”
Source: Gutenberg

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