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From rat + -y (suffix meaning ‘having the quality of’ forming adjective).
Etymology from Wiktionary, CC BY-SA 4.0.
ratty
rat·tyToday it means: Resembling or characteristic of a rat; ratlike. Full definition →
Today it means: Resembling or characteristic of a rat; ratlike. Full definition →
From rat + -y (suffix meaning ‘having the quality of’ forming adjective).
Etymology from Wiktionary, CC BY-SA 4.0.