invert

verb

1. (transitive)To turn (something) upside down or inside out; to place in a contrary order or direction.

   “to invert a cup, the order of words, rules of justice, etc.”

   “That doth invert the attest of eyes and ears, / As if these organs had deceptious functions.”

   “Seldom, alas! the power of logic reigns / With much ſufficiency in royal brains. / Such reaſ'ning falls like an inverted cone, / Wanting its proper baſe to ſtand upon.”

2. (transitive)To move (the root note of a chord) up or down an octave, resulting in a change in pitch.
3. (intransitive)To undergo inversion, as sugar.
4. To divert; to convert to a wrong use.

   “[H]e had miſgouerned the ſtate, inuerted his treaſures to his owne priuat […]”

5. To turn (the foot) inwards.

noun

1. An inverted arch (as in a sewer).
2. The base of a tunnel on which the road or railway may be laid and used when construction is through unstable ground. It may be flat or form a continuous curve with the tunnel arch.
3. The lowest point inside a pipe at a certain point.
4. An elevation of a pipe at a certain point along the pipe.
5. A skateboarding and snowboarding trick where the skater grabs the board and plants a hand on the coping so as to balance upside-down on the lip of a ramp.
6. (obsolete)A homosexual person, in terms of the sexual inversion theory.

   “We can seldom, therefore, congratulate ourselves on the success of any "cure" of inversion. The success is unlikely to be either permanent or complete, in the case of a decided invert; and in the most successful cases we have simply put into the invert's hands a power of reproduction which it is undesirable he should possess.”

7. (Internet)Of a person, assumed to be transgender, in terms of transvestigation.
8. (informal)An invertebrate.

adj

1. (not-comparable)Subjected to the process of inversion; inverted; converted.

   “invert sugar”