One who devotes; a person who dedicates themselves or their resources to something or someone.
From 'devote' + -er (suffix meaning 'one who' or 'that which'). Compare to 'devotee'—both mean similar things but -er is an older, simpler suffix.
English has multiple ways to name people doing things: 'devote' becomes 'devoter' (old-fashioned), 'devotee' (modern), or 'devot-ary' (literary)—showing how languages constantly compete between options.
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