straight up is an adjective meaning "(of an alcoholic drink) stirred or shaken with ice, but served without it". It carries one recorded sense.
(of an alcoholic drink) stirred or shaken with ice, but served without it
“I like my martinis straight up”
colloquialism
Definitions, synonyms and semantic relations for straight up come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.