Changes in Lexical Category
Unlike derivational suffixes, English (derivational) prefixes typically do not change the lexical category of the base (and are called class-maintaining prefixes). Thus, the word do consisting of a single morpheme is a verb as is the word redo, which consists of the prefix re- and the base root do.
However, there are a few prefixes in English that are class-changing in that the word resulting after prefixation belongs to a lexical category that is different from the lexical category of the base. Examples of this type include a-, be-, and en-. a- typically creates adjectives from noun and verb bases: blaze (noun/verb) > ablaze (adj). The relatively unproductive be- creates transitive verbs from noun bases: witch (noun) > bewitch (verb). en- creates transitive verbs from noun bases: slave (noun) > enslave (verb)
Read more about this topic: English Prefixes
Famous quotes containing the word category:
“I see no reason for calling my work poetry except that there is no other category in which to put it.”
—Marianne Moore (1887–1972)