finnage Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. the whole set of fins of a fish Example Sentence He admired the fancy goldfish with finnage similar to the fantail description. Synonyms fins; whole set of fins; fins of a fish Antonyms arms on a person Hear It! Say It! Write It! finnage Switch to cursive Start Share with your friends: