one-eight⋅y /ˈwʌnˈeɪti/[wuhn-ey-tee] –noun, plural -eight⋅ies. Definition: about-face, complete change Synonyms: 180 degree turn, change, change in direction, changeabout, double, doubleback, overturning, policy change, repeal, retraction, reversal, reverse, switch, turn, turnabout, turnaround, u-turn, volte-face