Here are some examples:
* Postmortem: After death (examination of a body after death)
* Postscript: Added after the main text (often at the end of a letter)
* Postgraduate: After graduation (studies done after completing a degree)
* Post-traumatic: After a trauma or injury (like Post-traumatic stress disorder)
* Postpone: To delay something to a later time
It's important to note that "post-" can also be used in a more abstract sense, meaning "subsequent" or "later in time". For example, "post-industrial" refers to the period after industrialization.
Ultimately, the specific meaning of "post-" will depend on the context in which it is used.