Definition of "straight-up"

straight-up

adjective
not comparable
1. (colloquial) Actual; unambiguous; plain, with no bones about it.
  Quotations
  Because it doesn’t actually produce anything, some knock Rockstar as a straight-up patent troll.
  2012 May 21, Robert McMillan, “How Apple and Microsoft Armed 4,000 Patent Warheads”, in Wired
2. Describing an alcoholic drink which has been served straight up.
adverb
not comparable
1. Alternative form of straight up