Motion mover

• One backing a motion
• One supporting monarch after short time
• Someone who endorses a motion or petition as a necessary preliminary to a discussion or vote
• Motion supporter
• One who say "Amen"

WordNet Word definitions in WordNet
n. someone who endorses a motion or petition as a necessary preliminary to a discussion or vote

Wiktionary Word definitions in Wiktionary
n. The person who makes a second to a motion in any formal procedure, such as a parliamentary procedure.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Seconder \Sec"ond*er\, n. One who seconds[3] or supports what another attempts, affirms, moves, or proposes; as, the seconder of an enterprise or of a motion.

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ A nomination is made on a prescribed nomination form, signed by the candidate, proposer and seconder . ▪ Elections Only corporate members may participate in elections, either as candidate, proposer, seconder or voter. ▪ Ken was ...