affix
affix
af·fix
I
/əˈfıks/ verb , -fix·es, -fixed, -fix·ing [ + obj ]
formal : to attach (something) to something else
Please affix a stamp to [=put a stamp on] this letter.
She affixed her signature to the document. [=she signed the document]
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af·fix
II
/ˈæˌfıks/ noun , pl -fix·es [ count ]
grammar : a letter or group of letters added to the beginning or end of a word to change its meaning : a prefix or suffix