Swerving
verb
To stray; to wander; to rove.
To go out of a straight line; to deflect.
To wander from any line prescribed, or from a rule or duty; to depart from what is established by law, duty, custom, or the like; to deviate.
noun
An unpredictable change of direction.
“The swervings of the stolen car.”
adjective
(humourous) Variable, unsteady.