Having plenty of space inside; not cramped or crowded.
From 'room' (space) plus the adjective suffix '-y.' Room itself comes from Proto-Germanic 'rūmaz' meaning open space, and adding '-y' makes it mean 'full of room or space.'
The word 'room' originally just meant 'space,' but over time it narrowed to mean a specific enclosed space in a building—so a 'roomy' car is literally one that's returned to the original meaning of 'spacious'!
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