'blurriness-inducing' originates from modern English, specifically the compound of the noun 'blurriness' (from 'blur' + suffix '-ness') and the present participle 'inducing' (from the verb 'induce', ultimately from Latin 'inducere'), where 'blur' conveyed the idea of making dim or unclear and 'induce' meant to bring about or cause.

'blur' developed in Middle English from forms such as 'blear'/'blerren' meaning 'to dim' or 'to make dirty/obscure', while 'induce' entered English via Old French from Latin 'inducere'; the compound 'blurriness-inducing' is a modern English formation that combines these elements to mean 'causing blurriness'.

Initially, 'blur' referred to dimness or obscuring and 'induce' meant 'to lead in' or 'to bring about'; over time the combined modern expression came to mean specifically 'causing a lack of visual clarity' as used today.