bailing, bailing out, booking(slang), buggering off(British slang), bugging off, bugging out, buzzing (off), clearing off(chiefly British), clearing out, cutting out, departing, digging out, exiting, getting, getting off, going, going off, moving, packing (up or off), parting, peeling off, piking (out or off), pulling out, pushing off, pushing on, quitting, running along, sallying (forth), scarpering(British), shoving (off), stepping (along), taking off, vamoosing, walking out

setting out, starting, striking outabsconding, decamping, escaping, evacuating, fleeing, flying, getting out, mizzling(chiefly British), running away, scatting, scramming, skippinggoing out, lighting out, stepping outabandoning, deserting, forsaking, vacatingemigratingadjourning, removing, retiring, retreating, withdrawing

beating it, hitting the road, pulling stakes(or pulling up stakes), taking a hike(also taking a walk)