Noun

• S: (n) straightness ((of hair) lack of a tendency to curl)
• S: (n) straightness (freedom from crooks or curves or bends or angles)
• S: (n) directness, straightness (trueness of course toward a goal) "rivaling a hawk in directness of aim"
• S: (n) good faith, straightness (having honest intentions) "he acted in good faith"; "doubt was expressed as to the good faith of the immigrants"
• S: (n) heterosexuality, heterosexualism, straightness (a sexual attraction to (or sexual relations with) persons of the opposite sex)