When instructing or asking someone to do something in a particular manner, the suffix ‘ly’ should be added to the root word. The word safe is a noun, so telling someone to “drive safe,” is telling him to drive a repository for storing valuables or to drive a vehicle that is called safe. Since the word drive is an action word, it is a verb. Words used to describe an action are called adverbs, similarly to the way adjectives describe nouns.
Advertisement
