verb , noun
■ verb
/ əˈfɪks; NAmE / [ vn ] [ often passive ] affix sth (to sth) ( formal ) to stick or attach sth to sth else :
The label should be firmly affixed to the package.
■ noun
/ ˈæfɪks/ ( grammar ) a letter or group of letters added to the beginning or end of a word to change its meaning. The prefix un- in unhappy and the suffix -less in careless are both affixes.
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WORD ORIGIN
late Middle English : from Old French affixer or medieval Latin affixare , frequentative of Latin affigere , from ad- to + figere to fix.