discordant
adjective uk/dɪˈskɔː.dənt/ us/dɪˈskɔːr.dənt/
（声音）刺耳的;不和谐的
producing an unpleasant sound
Synonyms: cacophonousdissonant grating harsh (TOO STRONG)shrillstrident (LOUD)tuneless
Opposites: euphonious harmonious (MUSIC)melodious tuneful
strike a discordant note formal 显出不一致的样子;发出不和谐的声音
to look or sound different or wrong compared with everything else
The contemporary dialogue struck a slightly discordant note. 对话显得略微有些不和谐。
For me, the last line in that paragraph strikes a slightly discordant note.
I think the very modern looking sofa strikes a discordant note in the otherwise rather traditional room.
The last speech of the evening struck a rather discordant note, ending as it did on a warning rather than a celebration of the work done.