Apologist is a related term of backer.
As nouns the difference between apologist and backer
is that apologist
is one who makes an apology while backer
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
One who, or that which, s; especially one who backs a person or thing in a contest.
:: /e?/ This diphthong is a glide from mid front tongue position toward a higher, backer position similar to that of /?/.
English agent nouns
- Martin J. Ball and Nicole Müller (2005), Phonetics for communication disorders , p. 174: