A colloquial word is the kind you use when you talk with friends, not the kind you put in a formal letter or a ceremony speech.

A colloquial word一個colloquial（口語的）詞 is the kind you use when you talk with friends是你跟朋友聊天時會用的那種，not the kind you put in a formal letter or a ceremony speech不是你會放進正式書信或典禮演講裡的那種。

Kids is more colloquial than children; gonna is colloquial for going to. It is not a rude word — it is just everyday talk.

Kids這個字 is more colloquial than children比children更口語；gonna這個字 is colloquial for going to就是going to的口語說法。It is not a rude word這不是個粗魯的詞——it is just everyday talk只是日常說話而已。

Dictionaries often mark words informal or colloquial; they sit close, though colloquial points more at spoken conversation.

Dictionaries often mark words informal or colloquial字典常把字標成informal（非正式）或colloquial（口語）；they sit close這兩個概念很接近，though colloquial points more at spoken conversation不過colloquial更偏向指口說對話。

Writers sometimes choose colloquial language on purpose, to sound warm. It is broader than slang: slang is often newer, narrower, and more in-group.

Writers sometimes choose colloquial language on purpose作家有時候會故意選用colloquial（口語）的語言，to sound warm讓語氣聽起來更親切。It is broader than slang它涵蓋的範圍比slang（俚語）更廣：slang is often newer, narrower, and more in-groupslang通常比較新、範圍比較窄，也比較侷限在特定小圈子裡。

The noun for one such word or phrase is colloquialism; this word is the adjective.

The noun for one such word or phrase這種字詞的名詞形式 is colloquialism是colloquialism；this word而colloquial這個字 is the adjective則是形容詞。