WordWeb Online

1. (of hair) lack of a tendency to curl
    
2. Freedom from crooks, curves, bends or angles
    
3. Trueness of course toward a goal
   "rivaling a hawk in straightness of aim";
   - directness
    
4. Having honest intentions
   - good faith, bona fides
    
5. A sexual attraction to (or sexual relations with) persons of the opposite sex
   - heterosexuality, heterosexualism

See also: direct, indirect

Type of: characteristic, configuration, conformation, contour, curvature, curve, form, honestness, honesty, sex, sex activity, sexual activity, sexual practice, shape

Antonym: crookedness, waviness

Encyclopedia: Straightness