elective

词形变化：

副词: electively | 名词: elec-tiveness |

同义词：

optional | selective | voluntary | discretionary | voting | free | electoral | electing | selecting | choosing | designated | elect | chosen | selected | elected | elective course |

反义词：

appointive | required | compulsory |

词义辨析：

同义:

a.选举的

electoral

electing

selecting

selective

choosing

a.随意选择的

elect

designated

selected

chosen

a.有选择的

optional

voluntary

discretionary

反义:

a.选修的; 选举的

compulsory

required

appointive