H. L. Mencken

“ Among the great masses of the plain people, it goes without saying, it flourishes unimpeded. The cautions of the school-marm, in a matter so subtle and so plainly lacking in logic or necessity, are forgotten as quickly as her prohibition of the double negative, and thereafter the adjective and the adverb tend more and more to coalesce in a part of speech which serves the purposes of both, and is simple and intelligible and satisfying. ”

“ Where an obvious logical or lexical distinction has grown up between an adverb and its primary adjective the unschooled American is very careful to give it its terminal -ly. For example, he seldom confuses hard and hardly, scarce and scarcely, real and really. These words convey different ideas. Hard means unyielding; hardly means barely. Scarce means present only in small numbers; scarcely is substantially synonymous with hardly. Real means genuine; really is an assurance of veracity. ”

“ Finally, it goes without saying that the common American tendency to add -s to such adverbs as towards is carried to full length in the vulgar language. One constantly hears, not only somewheres and forwards, but even noways and anyways, where’-bouts and here’bouts. ”