The antonym is a term from Greek origin which expresses an opposite or contrary idea. Examples: chiaroscuro, black/white, etc.The antonyms for advance fixing, are also known as antonyms grammatical, by use of morphemes (prefix), most commonly used prefixes that express opposition or denial are: an, suede, anti, against, des, dis, in, ex, pre.Examples: alphabet-analphabet (without instruction), diluviano-beforediluviano, social-antisocial, light-againstlight, walk-deswalk, remember-disMember, legal-ilegal, coherent-inconsistent, bring-exbring, natal-prenative. Generally, the prefix in is used for adjectives and des for verbs.
Taking into account that prefixes are put to the root or lexeme of words and suffixes are postponed, the antonym is suffixation. True, both the word " prefix " as the " 34 suffix; they have prefix: prae: front of and sub: below, on, with the verb figo figis figere which means nail, place: what placed piling forward and what is placed or piling back
