名詞 confederate:

1. a supporter of the Confederate States of America
2. someone who assists in a plot
   同義詞：collaborator, henchman, partner in crime
3. a person who joins with another in carrying out some plan (especially an unethical or illegal plan)
   同義詞：accomplice

動詞 confederate:

1. form a group or unite
   同義詞：band together
2. form a confederation with; of nations

形容詞 confederate:

1. of or having to do with the southern Confederacy during the American Civil War
2. united in a confederacy or league
   同義詞：allied, confederative

1. The Confederate Army.
   南方聯盟軍隊
2. The country tried to confederate itself with other countries for mutual safety.
   這個國家，為了共同安全，曾試圖使自己與別的國家結盟。
3. The thief was arrested, but his confederate escaped.
   小偷被逮住了，但他的同伙卻逃之夭夭。
4. The country agreed to confederate with the neighboring country for mutual safety.
   這個國家同意為了共同的安全而與鄰國結盟。

con.fed.er.ate

n.（名詞）
A member of a confederacy; an ally.
同盟者：同盟的成員；同盟者
One who assists in a plot; an accomplice.See Synonyms at partner
同伙：陰謀策劃的協(xié)助者；同謀參見 partner
Confederate A supporter of the American Confederacy.
Confederate 美國邦聯的支持者
adj.（形容詞）
United in a confederacy; allied.
被統(tǒng)一入聯盟；聯盟的
Confederate Of or having to do with the American Confederacy.
Confederate 美國聯邦的或與之有關的
v.tr.intr.（及物動詞和不及物動詞）
con.fed.er.at.ed,con.fed.er.at.ing,con.fed.er.ates[-…-r3t.]
To form into or become part of a confederacy.
結盟：使結成同盟或成為同盟的一部分

來源：
From Middle English confederat [allied]
源自 中古英語 confederat [結盟的]
from Late Latin cônfoeder3tus [past participle of] cônfoeder3re [to unite]
源自 后期拉丁語 cônfoeder3tus [] cônfoeder3re的過去分詞 [聯合]
Latin com- [com-]
拉丁語 com- [前綴，表.合.]
Latin foeder3re [to unite] from foedus foeder- [league] * see bheidh-
拉丁語 foeder3re [聯合] 源自 foedus foeder- [聯盟] *參見 bheidh-

【引伸】
confed.era.tive
adj.（形容詞）