1. With, together, jointly:
* Confer: To give or grant something, especially a degree, title, or honor.
* Confront: To face or deal with something difficult or unpleasant.
* Connect: To join or link together.
* Contribute: To give something, especially money or time, to a common cause.
2. Completely, thoroughly, fully:
* Convince: To persuade someone to believe something.
* Conclude: To bring something to an end.
* Consume: To eat or drink something.
* Conquer: To overcome or defeat something.
3. Against, opposite:
* Contradict: To say or do something that is the opposite of what someone else has said or done.
* Counteract: To act against something in order to reduce its effect.
* Contrary: Opposing or different.
4. Intensity, force:
* Condemn: To express strong disapproval of something.
* Confine: To keep someone or something within limits.
* Convict: To find someone guilty of a crime.
5. Other meanings:
* Concentric: Having the same center.
* Concave: Curved inward.
* Convex: Curved outward.
It's important to consider the context of the word to determine the specific meaning of the prefix "con-".