Derivation, Back-formation, Conversion, Compounding, Clipping, Blending, Abbreviations, Acronyms, Eponyms, Coinages, Nonce words, Borrowing, Calquing.
The following sections define and exemplify the related word formation processes of derivation and back-formation.
Derivation is the word formation process in which a derivational affix attaches to the base form of a word to create a new word. Affixes, which include prefixes and suffixes, are bound morphemes. Morphemes are the smallest linguistic unit of a language with semantic meaning. Bound morphemes, unlike free morphemes, cannot stand alone but must attach to another morpheme such as a word. For example, the following two lists provide examples of some common prefixes and suffixes with definitions in English:
Prefixes
a- – without, not co- – together de- – opposite, negative, removal, separation
Suffixes
-able – sense of being
-er – agent
-ful – characterized by
Back-formation is the word formation process in which an actual or supposed derivational affix detaches from the base form of a word to create a new word. For example, the following list provides examples of some common back-formations in English:
Original – Back-formation babysitter – babysit donation – donate gambler – gamble
A Wh question is an open question, meaning that it can have any number of answers. It asks about some missing information the speaker needs. This corresponds to the different sentence elements, such as the verb, objects, manner, place, time, purpose, etc. Questions about the subject have a special form (see the next section). A question element needs to precede the subject in order to form this question. The “question element” is formed according to the following rule.
There are 8 wh questions what, when, which, where, why, who, whom, and whose; to this list we