decline [dɪˈklaɪn]

以下由轻松背单词网站提供

n.衰微，跌落，下降；vt.使降低，婉谢；vi.下降，衰落，偏斜

to gradually become less, worse , or lower

I must decline to show favour to any of the candidates. 我必须拒绝偏袒任何一位候选人。
The birthrate is on the decline. 出生率在下降。