about turn(n = noun.act) about-face - act of pivoting 180 degrees, especially in a military formation; Array
is a kind of reversal, reverse, reversion, turnabout, turnaround

amp'8are turn, good turn, ill turn, in turn, kick turn, sea turn, stem turn, three-point turn, toss and turn, turn, turn a blind eye, turn a loss, turn a nice dime, turn a nice dollar, turn a nice penny, turn a profit, turn a trick, turn about, turn around, turn aside, turn away, turn away from, turn back, turn down, turn in, turn indicator, turn inside out, turn into, turn of events, turn of expression, turn of phrase, turn of the century, turn off, turn on, turn on a dime, turn one's stomach, turn out, turn over, turn over a new leaf, turn red, turn signal, turn tail, turn the corner, turn the other cheek, turn the tables, turn the tide, turn the trick, turn thumbs down, turn to, turn turtle, turn up, turn up the heat, turn up the pressure, turn upside down