partner

associate, companion, comrade, colleague, fellow, partner

这些名词均有“同事，伙伴”之意。
associate: 普通用词，侧重指在利害关系上密切相关。
companion: 指陪伴他人的人，即同伴或陪伴。
comrade: 指具有共同的事业、利益关系相一致的人。
colleague: 一般用于对同事的正式称呼，基本上专用在职业关系上。
fellow: 多用复数形式，指一块住、生活或同行共事的人。
partner: 指事业中处于合伙关系的人，或指婚姻、游戏、跳舞中的另一方。

名词 partner:

1. a person's partner in marriage
   同义词：spouse, married person, mate, better half
2. an associate who works with others toward a common goal
   同义词：collaborator, cooperator, pardner
3. a person who is a member of a partnership

动词 partner:

1. provide with a partner
2. act as a partner

1. It's your call, partner.
   伙伴，该你叫牌了。
2. He has a practical partner who organizes everything for him.
   他有个很能干的伙伴，替他把一切弄得井井有条。
3. He was done away with by his partner.
   他被他的同伙杀死。
4. The business is owned by two partners.
   这家商行为两名合伙人所拥有。
5. Are you sure you want him to be your partner?
   你肯定你想要他作你的终身伴侣吗？

part.ner

n.（名词）
One that is united or associated with another or others in an activity or a sphere of common interest, especially:
伙伴，同伙：在一项活动或一个涉及共同利益的领域内与另一人或其他人联合或有联系的人，尤指：
A member of a business partnership.
企业合作人：商业合作关系中的一员
A spouse.
配偶
Either of two persons dancing together.
舞伴：两个一起跳舞的人之一
Sports Games One of a pair or team in a sport or game, such as tennis or bridge.
【体育运动】 【游戏】 搭档：在网球或桥牌等体育运动中一队或一对之一
Often partners Nautical A wooden framework used to strengthen a ship`s deck at the point where a mast or other structure passes through it.
常作 partners 【航海】 补板：轮船甲板、桅杆或其它结构中穿过处起加固作用的木制框架
v.（动词）
part.nered,part.ner.ing,part.ners
v.tr.（及物动词）
To make a partner of.
使…成为伙伴
To bring together as partners.
使合伙：作为合伙人而聚在一起
To be the partner of.
成为…的伙伴
v.intr.（不及物动词）
To work or perform as a partner.
合伙，搭档：作为搭档在一起工作或表演

来源：
Middle English partener
中古英语 partener
alteration influenced by part [part]
受 part的影响 [部分]
of parcener [parcener] * see parcener
parcener的变化 [共同继承人] *参见 parcener

<参考词汇><同义词>partner,colleague,ally,confederateThese nouns all denote one who is united or associated with another, as in a venture or relationship. Apartner participates in a relationship in which each member has equal status:
这些名词都是指在一项冒险事业或一类关系中与另一方联合或有联系的一方。Partner 指参加到一种每个成员都处于平等地位的关系中的一员：
例句：
a partner in a law firm;
律师事务所中的合伙人；

例句：
husbands and wives who are ideal partners. Acolleague is an associate in an occupation, such as a profession:
是理想伴侣的丈夫或妻子。 Colleague 与职业有关，如职业：

例句：
a colleague and fellow professor. Anally is one who associates with another, at least temporarily in a common cause:
一个既是同行又是同事的教授。 Ally 是与另一方有联系的一方，至少在一项共同事业中暂时联合：

例句：
The United States and the Soviet Union were allies in World War II. Aconfederate is a member of a confederacy, a league, or an alliance; sometimes the term signifies a collaborator in a suspicious venture:
在第二次世界大战中美国与苏联是同盟国。 Confederate 是指同盟、团体或联盟中的一员； 有时这个词也指一项可疑事件中的共谋者：

例句：
The confederates, undefeated, pushed onward.
未被击败的同盟军继续向前推进。

例句：
The burglar was caught, but his confederate got away.
这个盗窃犯被抓住了，但他的同伙却逃脱了