Brit., Informal slow-witted; stupid
Origin of gormlessaltered from dialect, dialectal gaumless from gaum, gome, care from Middle English gome from Old Norse gaum, akin to Old English gieme, care, Gothic gaumjan, to heed
Lacking intelligence or vitality; stupid or dull.
Origin of gormlessFrom dialectal gawm sense from Middle English gome notice from Old Norse gaumr
(comparative more gormless, superlative most gormless)