• to come about, to shift round, to tack, to veer, to veer about
• to shift one's ground, to tack
• alteration, altering, change, changeover, shift
• to change, to convert, to metamorphose, to transfigure, to transmogrify, to transmute
• to alter, to amend, to change, to reverse, to revise
• conversion, transfiguration, transmutation
• commutable, transformable