A strident sound is loud, unpleasant, and rough.

People are put off by his strident voice. 人们对他刺耳的嗓音感到很厌恶。

expressing or expressed in forceful language that does not try to avoid upsetting other people

a strident newspaper article 报纸上措词强硬的文章

They are becoming increasingly strident in their criticism of government economic policy. 他们对政府经济政策的抨击越来越猛烈。