affixation
词形变化：
形容词: affixable | 名词: affixer | 动词过去式: affixed | 动词过去分词: affixed | 动词现在分词: affixing | 动词第三人称单数: affixes |
同义词：
assert | confirm | state | pronounce | support | sustain | avow | verify | encourage | uphold | insist | establish | announce | acknowledge | certify | endorse | ratify | declare | testify | insure | swan | maintain | allege | swear | aver | claim | corroborate | substantiate |
反义词：