a person who argues to defend or justify some policy or institution
An apologist for capital punishment.
source: WordNet 3.0
One who makes an apology; one who speaks or writes in defense of a faith, a cause, or an institution; especially, one who argues in defense of Christianity.
source: Webster 1913
English to Tagalog
noun
[apólodchist] Tagapagsanggalang ó tagapagbigay dahilan