/ kəˈləʊkwiəl; NAmE -ˈloʊ-/ adjective
( of words and language ) used in conversation but not in formal speech or writing
SYN informal
► col·lo·qui·al·ly / -kwiəli; NAmE / adverb
••
WORD ORIGIN
mid 18th cent.: from Latin colloquium conversation + -al .