language and dialect
A dialect is a regional or social variety of a language.
Make every effort to check a direct quote in dialect or nonstandard English.
Showing someone's speech as colorful is acceptable, but guard against ridicule.
Generally set individual words and phrases or short passages of dialect as well as English-based pidgin and Creole in italic only if unfamiliar or not recognizable as their English equivalents:
Wok long rot ol kar mas stop sapos yu lukim red pela mak—
Work on road, all cars must stop when you see the red sign