Kool-Aid · proper noun1
Trademark, presumably from cool and -ade, influenced by aid.
Kool-Aid · noun2
Back-formation from drink the Kool-Aid.
Etymology from Wiktionary, CC BY-SA 4.0.
kool-aid
Today it means: A fad or ideology that is adopted unquestioningly, ignoring its hidden dangers or disadvantages. Full definition →