rum-dum

or rum-dumm

[ ruhm-duhm ]
/ ˈrʌmˌdʌm /
Slang.

noun Disparaging and Offensive.

a stupid or ignorant person.
a habitual drinker of alcohol who is frequently intoxicated.

adjective

of, related to, or arising from habitual drunkenness; addled by intoxicating drinks.

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Also rum-dumb .

Origin of rum-dum

First recorded in 1890–95; rhyming compound with rum1 and dumb, perhaps influenced in sense by humdrum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020