A leap or spring in which a person turns heels over head in the air and alights on his feet; esp. such a feat as performed by acrobats or…

The action or fact of reversing or transposing in direction, order, relationship, or effect; an instance of reversal or transposition; something…

Inversion of the natural or logical order; an instance of this.

The quality of being preposterous; †inversion of the natural or rational order (obsolete); perversity; unreasonableness; absurdity.

The action of reversing or inverting something; the result of this.

The opposite or contrary of something; = reverse, n. 1a.

The opposite or contrary of something; esp. a situation, process, state of affairs, etc., which is the… With of, to, or possessive.

The action of reversing something, or the fact of being reversed; reversal. Also: an instance of this.

a making or turning topsy-turvy, reversal of the natural order.

The act or process of setting something on its end; an act of turning upside down. Frequently figurative.