Apologize is a related term of apologist.
As a noun apologist
is one who makes an apology.
As a verb apologize is
to make an apology or defense; to act as apologist.
Other Comparisons: What's the difference?
One who makes an apology.
One who speaks or writes in defense of a faith, a cause, or an institution.
* (one who makes an apology) apologizer, apologiser
* apologise (Commonwealth)
To make an apology or excuse; to acknowledge some fault or offense, with expression of regret for it, by way of amends
- My correspondent apologized for not answering my letter.
To express regret that a certain event has occurred.
(dated) To make an apology or defense; to act as apologist.
- to apologize for his insolent language