Scottish National Dictionary (1700–)
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First published 1956 (SND Vol. IV).
This entry has not been updated since then but may contain minor corrections and revisions.
†GARGRUGOUS, GUR-, adj. “Austere both in aspect and in manners; at the same time inspiring something approaching to terror, from the size of the person” (Fif. 1825 Jam.); ugly (Ib., gurgrugous).[Gar-, gur-, prob. intensive pref. (cf. Cur-, car-) + Grugous, grim. Cf. Alagrugous.]
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"Gargrugous adj.". Dictionary of the Scots Language. 2004. Scottish Language Dictionaries Ltd. Accessed 3 Dec 2023 <http://www.dsl.ac.uk/entry/snd/gargrugous>