tuneless
adj. 不和谐的；不成调子的
例句
Someone walked by, singing a tuneless song.
有人走过，唱着一首不成调的歌。
《柯林斯英汉双解大词典》
A young man walked by, singing a tuneless song.
一个年轻人从身边走过，哼着不成调的歌。
Her tuneless music made her father's blood boil.
她那难听的音乐使她父亲很生气。
