The spelling of the word "Impennous" can be explained through IPA phonetic transcription. It is pronounced /ɪmˈpɛnəs/ and consists of three syllables: im-pen-nous. The prefix "im-" means not or without, and "pennous" is derived from the Latin word "penna," meaning feather. Thus, "impennous" means lacking feathers or wingless. This word is often used to describe birds that have lost their feathers or are born without them, and can also be used metaphorically to describe people or things that lack something essential or important.