五音不全

tone deaf / unable to sing in tune

five / 5

five notes of pentatonic scale, roughly do, re, mi, sol, la / five classes of initial consonants of Chinese phonetics, namely: 喉音[hou2 yin1], 牙音[ya2 yin1], 舌音[she2 yin1], 齒音|齿音[chi3 yin1], 唇音[chun2 yin1]

sound / noise / note (of musical scale) / tone / news / syllable / reading (phonetic value of a character)

no; not so / (bound form) not; un-

all / whole / entire / every / complete