retreater
Retreater is a noun in English that denotes a person who retreats or withdraws from a place, situation, or commitment. The term can apply in military contexts to a soldier or unit that withdraws from combat, in legal or business settings to someone who withdraws from an agreement, or in everyday life to a person who pulls back from a social obligation.
Etymology: The word is formed by adding the agent suffix -er to the verb retreat. Retreat itself
Usage: Retreater is relatively uncommon in modern English; more common alternatives include withdrawer, someone who retreats,
Related terms and contexts: In religious or spiritual contexts, participants in a retreat are typically called