a straight line
She has straight hair.
She has straight [blond] hair and blue eyes. (Preliminary English Test; B1; Italian)
a straight answer
I'm asking you to give us a reasonable and straight reply. (First Certificate in English; B2; Russian)
That shelf's not straight.
Let me get this straight - am I paying for this?
Next time you should try to get your facts straight. (Certificate in Advanced English; C1; Greek)
I can never play jokes on people because I can't keep a straight face.
Go straight, then turn left at the traffic light.
He was looking straight at me.
The library is straight ahead.
From my house we must go straight, then we must take second turn to the left. (Key English Test; A2; Czech)
I got home and went straight to bed.
Do you want to go straight to the party or stop for a bite to eat first?
When I came back home at 11:30, I went straight to bed. (Preliminary English Test; B1; Italian)
Stand up straight and put your shoulders back!
She tried to sit up straight and quickly reali[z]ed all her mus[c]les were stiff from non-activity. (First Certificate in English; B2; French)
I was so tired, I couldn't think straight.
My stress wouldn't let me think straight. (Certificate in Advanced English; C1; Greek)