IPA: /əˈpɒlədʒaɪzə/
KK: /əˈpɑːləˌdʒaɪzər/
A person who expresses regret or sorrow for something they have done wrong.
After realizing his mistake, he became the first apologizer in the meeting.
Apologizer → It is formed from "apology" (from Greek "apologia", meaning a speech in defense) and "-izer" (a suffix indicating a person who performs an action). The word "apologizer" refers to a person who makes a defense or expresses regret for an offense or failure.
Think of someone making a 'defense' ('apologia') for their actions — that's why an apologizer is someone who expresses regret or seeks to make amends.