the term is usually said when someone is telling the truth, or being honest
Dude, up straight that guy just wants to get into your pants.
by gonmalzalloryez November 18, 2013
Not hiding anything or not hiding much. Telling the truth. Being honest. Keepin' it real
He was straight-up when he said he doesn't like the way his boss treats him.
by youknow247son May 21, 2008
To do something honestly, definitely, exactly, or without making a mistake.
It is often said for emphasis
Guy 1: Dude, I straight up banged your mom last night!
Guy 2: Not cool man.
by Tarboy9 July 23, 2015
1. Actually.

2. In all honesty, seriously.

3. Honest.
1. That guy straight up just took off his clothes in public.

2. Straight up, I'm not playing with you.

3. If he asks you where you were, be straight up, don't lie about it.
by Some Guy 88 March 9, 2019
To be right or for real
Person: That is the coolest thing ever.

Person 2: Straight up.
by Tazzaler October 16, 2005
When he told me about what he had done, I was surprised! I asked him "Straight up?" and he said "Yeah, honest!"
by Pro-Love Girl May 3, 2010
like the straight arrow, flying forward towards its target, straight up gets straight to the point. No bullshit, I am telling you exactly what I mean.
We should go to a movie straight up.
Dude straight up, lets do this.
by Andrew Shea August 24, 2004