THESAURUS
swerving
aberrancy, aberrant, aberration, aberrative, bend, bias, branching off, circuitous, circuitousness, corner, crook, curve, declination, departing, departure, desultory, detour, deviance, deviancy, deviant, deviating, deviation, deviative, deviatory, devious, deviousness, digression, digressive, discursion, discursive, divagation, divarication, divergence, diversion, dogleg, double, drift, drifting, errant, errantry, erratic, excursion, excursive, excursus, exorbitation, hairpin, indirect, indirection, labyrinthine, mazy, meandering, obliquity, out-of-the-way, pererration, planetary, rambling, roving, serpentine, sheer, shift, shifting, shifting course, shifting path, skew, slant, snaky, stray, straying, sweep, swerve, swinging, tack, turn, turning, twist, twisting, undirected, vagrant, variation, veer, veering, wandering, warp, winding, yaw, zigzag
ROGET THESAURUS
swerving
Deviation
N
deviation,
swerving, obliquation, warp, refraction, flection, flexion, sweep, deflection, deflexure, declination, diversion, digression, depart from, aberration, divergence, zigzag, detour, divagation, wandering, vagrancy, evagation, bypaths and crooked ways, byroad, sidling, knight's move at chess, deviating, aberrant, errant, excursive, discursive, devious, desultory, loose, rambling, stray, erratic, vagrant, undirected, circuitous, indirect, zigzag, crab-like, astray from, round about, wide of the mark, to the right about, all manner of ways, circuitously, obliquely, sideling, like the move of the knight on a chessboard.