The spelling of the word "Hyen" may seem unusual, but it's actually a phonetic representation of the word "hyena". The correct spelling is "hyena" /haɪˈiːnə/ which consists of two syllables "hy-" and "-ena". The "Hyen" spelling may have originated from an incorrect pronunciation or regional dialect. However, it's essential to use correct spellings to avoid miscommunication and confusion. Therefore, it's important to double-check spelling and pronunciation when using unfamiliar words.