definition of
straightness

[1] #1 straightness n. (of hair) lack of a tendency to curl. wn

[2] #2 straightness n. freedom from crooks or curves or bends or angles. wn

[3] #3 straightness n. [directness] trueness of course toward a goal; "rivaling a hawk in directness of aim". wn

[4] #4 straightness n. [good faith] having honest intentions; "he acted in good faith"; "doubt was expressed as to the good faith of the immigrants". wn

[5] #5 straightness n. [heterosexuality, heterosexualism] a sexual attraction to (or sexual relations with) persons of the opposite sex. wn