Causing or characterized by blisters; prone to blistering or likely to cause blisters.
From 'blister' (Middle English, from Old Norse 'blystre') plus '-ous' (adjective suffix meaning 'full of' or 'having the nature of').
The word 'blisterous' is technically correct but rarely used—most people say 'blistering' instead, showing how some grammatically valid words fade away when English users collectively prefer a simpler alternative.
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