5.2 Prefixation 求 The definition of prefixation Prefixation is the formation of new words by adding prefixes to stems. Prefixes do not generally change the word-class of the stem but only modify its meaning However, there is an insignificant number of class- changing prefixes Non-class- changing prefixes: natural-unnatural, like-dislike fair unfair Class-changing prefixes: force-enforce, danger-endanger, form deform, little -belittle, war-postwar, college-intercollege 米 English Lexicology (m)English Lexicology(II) 5 5.2 Prefixation ◼ The definition of prefixation ◼ Prefixation is the formation of new words by adding prefixes to stems. Prefixes do not generally change the word-class of the stem but only modify its meaning. However, there is an insignificant number of class￾changing prefixes ◼ Non-class-changing prefixes: natural-unnatural, like-dislike, fair￾unfair ◼ Class-changing prefixes: force-enforce, danger-endanger, form￾deform, little-belittle, war-postwar, college-intercollege