(n): the act of changing or reversing the direction of the course
(n): an erratic deflection from an intended course
(n): a movement in a new direction
(v): turn sharply; change direction abruptly
(v): change orientation or direction, also in the abstract sense
And who shall put her to this trial?-- Who but the man who has, as she thinks, already induced her in lesser points to swerve?
Lovelace to Belford, Clarissa by Samuel Richardson