amphi Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition preposition. a prefix meaning both or on both sides. Example Sentence The prefix amphi is used for many words. More Example Sentences Amphi refers to something that is dual. Synonyms both; dual; double Antonyms one sided Hear It! Say It! Write It! amphi Switch to cursive Start Share with your friends: