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Adjective: straight-up
Usage: informal
  1. Worthy of trust or belief
    - trustworthy, trusty, trustable
  2. Taking responsibility for one's conduct and obligations
    - trustworthy, trustable
Adjective: straight up
  1. (of an alcoholic drink) stirred or shaken with ice, but served without it
    "I like my martinis straight up"
Adverb: straight up
Usage: informal
  1. In an honest manner
    - honestly, aboveboard

See also: authentic, creditworthy, dependable, faithful, fiducial, honest, honorable [US], honourable [Brit, Cdn], pure, reliable, responsible, sure, true, trusted

Encyclopedia: Straight-up

Straight up