Origin: Germanic Old English suffix
Straightness has 6 different meanings across 1 category:
(of hair) lack of a tendency to curl
freedom from crooks or curves or bends or angles
having honest intentions
"he acted in good faith"
"doubt was expressed as to the good faith of the immigrants"
a sexual attraction to (or sexual relations with) persons of the opposite sex
The state or quality of being straight (especially in the sense of "heterosexual").