The correct spelling of the phrase "study at futile" is "study is futile." The word "futile" is spelled with a long U sound, represented in the International Phonetic Alphabet as /ˈfjuːtaɪl/. This means that the U is pronounced like the word "you" and the E at the end of the word is silent. The phrase "study is futile" means that studying is pointless or without any practical use or result.