guarantees
词形变化：
动词过去式: guaranteed | 动词过去分词: guaranteed | 动词现在分词: guaranteeing | 动词第三人称单数: guarantees |
同义词：
pledge | assure | promise | warrant | certify | secure | ensure | security | assurance | warranty | agreement | swear | certification | undertaking | contract | underwrite | endorse | back | sponsor | insure | vouch | proof | insurance | convince | engagement | stand | vow | for | stand for | bond | support | undertake | guaranty | warrantee |
反义词：