相关单词同义词dual, two, fold, redouble, duplicate, twifold, twofold, 近义词adj. paired, twice, twin反义词adj.single临近词doublet, dotty, doubler, doubled, doubles, doubleo, Double J, double X, Double T, Doubleau, doublevee, Doubleday相似词doth, doting, dotted line, dotty, double (sb) up/over, double (up) as sth, double agent, double back, 返回 double