stray

To move away from a group, deviate from a course, or escape from established limits.

To move without a destination or purpose; wander: synonym: wander.

To be directed without apparent purpose; look in an idle or casual manner.

To follow a winding or erratic course.

To act contrary to moral or proper behavior, especially in being sexually unfaithful.

To become diverted, as from a subject or train of thought: synonym: swerve.

One that has strayed, especially a domestic animal wandering about.

Straying or having strayed; wandering or lost.

Scattered or separate.