English Skills with Readings 7th Edition by John Langan

Exercise 33

Usage Labels
As a general rule, use only standard English words in your writing. If a word is not standard English (as is the case, for example, with the fourth meaning of murder as a verb), your dictionary will probably give it a usage label like one of the follow­ing: informal, nonstandard, slang, vulgar, obsolete, archaic, rare.
Look up the following words and record how your dictionary labels them. Remember that a recent hardbound desk dictionary will always be the best source of information about usage.
flunk ____________________________________________
tough (meaning "unfortunate, too bad") ___________________________________
creep (meaning "an annoying person") ___________________________________
ain't ___________________________________________________
scam _____________________________________________