α. Scottish pre-1700 raterryme, pre-1700 rat-rime, pre-1700 rat-ryme, pre-1700 ratt-rime, pre-1700 1900s– ratt-rime, 1700s rat-rhime, 1700s rat-rythm, 1800s rat-rhyme, 1800s ratt-rime, 1800s rattrum; English regional (Northumberland) 1800s– rat-raim, 1800s– rat-rhyme.
β. Scottish pre-1700 1800s rot-rime, 1700s rot-rhime, 1800s rott-rime.