deviate

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To turn aside from a course or way.
2. v. To depart, as from a norm, purpose, or subject; stray. See Synonyms at swerve.
3. v. To cause to turn aside or differ.
4. n. A deviant.

Century Dictionary and Cyclopedia

1. To turn aside or wander from the way or course; err; swerve: as, to deviate from the common track or path, or from a true course.
2. To take a different course; diverge; differ.
3. To cause to swerve; lead astray.
4. To change the direction or position of, as a ray of light or the plane of polarization. See biquartz.

Wiktionary

1. n. A person with deviant behaviour; a deviant, degenerate or pervert.
2. n. A value equal to the difference between a measured variable factor and a fixed or algorithmic reference value.
3. v. To go off course from; to change course; to change plans.
4. v. To fall outside of, or part from, some norm; to stray.

GNU Webster's 1913

1. v. To go out of the way; to turn aside from a course or a method; to stray or go astray; to err; to digress; to diverge; to vary.
2. v. To cause to deviate.
3. adj. having behavior differing from that which is normal or expected, especially in an undesirable or socially disapproved manner.
4. n. a person having behavior differing from that which is normal or socially acceptable; -- used especially to characterize persons whose sexual behavior is considered morally unacceptable.

WordNet 3.0

1. v. be at variance with; be out of line with
2. v. turn aside; turn away from
3. v. cause to turn away from a previous or expected course
4. n. a person whose behavior deviates from what is acceptable especially in sexual behavior
5. adj. markedly different from an accepted norm