collaborate
collaborate — verb
1. To join with another person or group in a shared effort to create, develop, or c
To join with another person or group in a shared effort to create, develop, or carry out a project, piece of work, or goal.
The two artists collaborated on a mural for the city library.
collaborate + on + project
Leila and Kofi collaborated with the design team on the new app interface.
collaborate + with + someone + on + something
Scientists from five countries collaborated to develop a faster testing method.
The school is collaborating with local businesses to create internship programs for students.
Diego and Hana collaborated closely on the research paper for nearly six months.
- cooperate
Broader term — can mean simply being helpful or compliant, not necessarily working jointly on the same task
- team up
More informal, often used for temporarily joining forces on a specific project
- join forces
Suggests combining resources or effort for a common aim, often in business or military contexts
- partner
More formal and business-oriented; implies a structured, often long-term relationship
- work alone
The opposite of joint effort
文法句型
collaborate + with + someone
collaborate + on + something
collaborate + to-infinitive
用法筆記
Frequently paired with prepositions: 'with' introduces the person or group, and 'on' introduces the task or project. Can also be followed by a 'to'-infinitive to state the shared goal. The adverb 'closely' is a common modifier.
常見錯誤
2. To willingly assist or cooperate with an enemy force that has occupied your own
To willingly assist or cooperate with an enemy force that has occupied your own country, especially during a war — an act viewed as treason.
During the war, anyone who collaborated with the occupying army faced trial after liberation.
negative political sense: collaborate with + occupying force
The documentary shows how some local officials secretly collaborated with the invading forces.
Historians debate whether the village leaders collaborated under threat or out of loyalty.
After the occupation ended, several people were punished for collaborating with the former regime.
- collude
Also negative but broader — can mean secret cooperation for deceitful purposes beyond wartime
- fraternize
Suggests friendly association with an enemy, not necessarily active assistance
- consort with the enemy
An idiomatic expression with the same meaning, used especially in historical and legal contexts
- resist
To oppose the enemy rather than assist it
文法句型
collaborate + with + enemy / occupying force
用法筆記
This sense carries a strongly negative moral judgment — it implies betrayal of one's own country. Distinguish from sense 1 (WORK WITH) by the wartime/occupation context: the object of 'collaborate with' here is always an enemy or occupying force.