A friend or companion; someone you treat like a cousin through choice rather than blood relation.
From 'cater' meaning to provide or entertain, plus 'cousin', suggesting someone you invite in and treat as family through generosity and companionship.
Before modern friendship culture, 'catercousin' described something real—people who bonded so closely through shared experiences that kinship became irrelevant, showing how chosen family has always mattered.
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