Flat adverb

In English grammar, a flat adverb, bare adverb, or simple adverb is an adverb that has the same form as the corresponding adjective, so it usually does not end in -ly, e.g. "drive slow", "drive fast", "dress smart", etc. The term includes words that naturally end in -ly in both forms, e.g. "drive friendly". Flat adverbs were once quite common but have been largely replaced by their -ly counterparts. In the 18th century, grammarians believed flat adverbs to be adjectives, and insisted that adverbs needed to end in -ly. According to the Merriam-Webster Dictionary, "It's these grammarians we have to thank for ... the sad lack of flat adverbs today". There are now only a few flat adverbs, and some are widely thought of as incorrect. Despite bare adverbs being grammatically correct and widely used by respected authors, they are often stigmatized. There have even been public campaigns against street signs with the traditional text "go slow" and the innovative text "drive friendly."

This keyword could refer to multiple things. Here are some suggestions: