相关单词同义词undertake, swear, for, 近义词 guarantee 保证, pledge 发誓, convince 使确信, ensure 担保, promise 诺言, reassure 使…安心, insure 保险, secure 安全的, swear 咒骂, declare 宣布（声明）..., make certain 弄清楚, nail down 用钉子钉住, substantiate 证实, verify 核实, comfort 舒适, vow 誓约, satisfy 使满意, vouch 担保, testify 作证, make 做, certain 确定的, ascertain 确定, see 看见, check 检查, tell 告诉, control 掌控反义词alarm, 警报worry, 撕咬临近词assured, assurance, assurer, assure of, assure safety, assure oneself, assure security, assure sb of sth, assure one's life, assure oneself of, assure sb's success, assure ... of相似词assume, assuming (that), assumption, assurance, assured, assuredly, astatine, aster, 返回 assure