IPA: /ʌpˈhoʊldər/
KK: /ʌpˈhoʊldər/
A person who supports or maintains something, often in a moral or legal sense.
As an upholder of justice, she always stood up for what was right.
Upholder → It is formed from "up" (meaning in a higher position) and "hold" (from Old English "holdan", meaning to grasp or support) and the suffix "-er" (meaning a person who). An upholder is a person who supports or maintains something in a higher position.
Think of someone who 'holds' something 'up' — that's why an upholder is a person who supports or maintains something.