Backer and Upholder

Backer noun - A person who actively supports or favors a cause.

Upholder and backer are semantically related in supporter topic. In some cases you can use "Upholder" instead a noun "Backer".

Nearby Words: backing, backed

Upholder noun - Someone who upholds or maintains.

Backer and upholder are semantically related in advocates topic. You can use "Backer" instead a noun "Upholder", if it concerns topics such as person devoted to another or cause, preeminent supporter, person who helps another, supports cause.

Nearby Words: uphold, upholding