successful的反義詞
successful詞性是形容詞
釋義:something that is successful achieves what it was intended to one is successful achieves what they intended to achieve.有成效的
例句 How successful will this new treatment be? 這種新療法將會有多大成效?
successful的反義詞是unsuccessful
釋義:Something that is unsuccessful does not achieve what it was intended to achieve. 不成功的
例句:His efforts were unsuccessful.他的努力沒有成功。
successful是成功的意思所以反義詞是失敗可以是fail還有unsuccessful這個詞,也是不成功,失敗的意思可以使用