The word "吩咐" is formed by combining two characters, each structured as a phonetic compound. The character "吩" consists of the mouth radical (口) on the left, indicating relation to speech, and the component "分" on the right, which suggests its pronunciation. Similarly, "咐" uses the mouth radical (口) on the left and the component "付" on the right for phonetic indication. Together, these characters create a disyllabic word where the radicals convey the meaning of verbal instruction, and the phonetic components approximate the sound.