Suffixive is an adjective that describes something pertaining to or having the nature of a suffix. Synonyms for this word include suffixed, suffixal, postpositive, and appendant. Suffixed means having a suffix or being a word that has one or more suffixes. Suffixal means relating to a suffix or having the nature of one. Postpositive refers to a grammatical structure where a word or phrase is placed after another, while appendant means something that is attached to or added at the end of something else. These synonyms are helpful in expressing the same concept in various ways and can enhance one's writing and language skills.