相关单词同義詞certain, hard, 近義詞 certain 確定的, sure 肯定的, absolute 絕對的, definite 明確的, indubitable 不容置疑的, undisputed 無可置辯的, unquestionable 無疑問的, indisputable 無可爭辯的臨近詞undress, undo, undoubtedly, undoubted fact, undoubtedly true, undoubted evidence, undoubtedly advice, Undoubtedly he did it., undoubted difficulties/problems相似詞undo, undocumented, undoing, undone, undreamed of, undress, undress sb with your eyes idiom, undue, 返回 undoubted