Derivation is the formation of a new word or inflectable stem from another word or stem. It typically occurs by the addition of an affix.
The derived word is often of a different word class from the original. It may thus take the inflectional affixes of the new word class.
In contrast to inflection, derivation:
(English)
Kindness is derived from kind.
Joyful is derived from joy.
Amazement is derived from amaze.
Speaker is derived from speak.
National is derived from nation.
Payne, Thomas E. (1997) .Describing morphosyntax: A guide for field linguists. Cambridge; New York: Cambridge University Press.
Mish, Frederick (editor). 1991.Webster's ninth new collegiate dictionary. Springfield, MA: Merriam-Webster. 1,564 pages. 0877795088; indexed 0877795096; deluxe 087779510X.
Hartmann, R.R.K., and F.C. Stork. 1972.Dictionary of language and linguistics. London: Applied Science.
Crystal, David. 1985.A dictionary of linguistics and phonetics. 2nd edition. New York: Basil Blackwell.
Bybee, Joan L. 1985.Morphology: A study of the relation between meaning and form. Amsterdam: John Benjamins.