twistical

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective twistical is

(archaic) crooked; tortuous; hence, perverse; unfair; dishonest.

As adjectives the difference between dishonest and twistical

is that dishonest is not honest while twistical is (archaic) crooked; tortuous; hence, perverse; unfair; dishonest.

As adjectives the difference between unfair and twistical

is that unfair is not fair, unjust while twistical is crooked; tortuous; hence, perverse; unfair; dishonest.

As adjectives the difference between perverse and twistical

is that perverse is turned aside; hence, specifically, turned away from the (morally) right; willfully erring; wicked; perverted while twistical is (archaic) crooked; tortuous; hence, perverse; unfair; dishonest.

As adjectives the difference between tortuous and twistical

is that tortuous is twisted; having many turns; convoluted while twistical is (archaic) crooked; tortuous; hence, perverse; unfair; dishonest.

As adjectives the difference between crooked and twistical

is that crooked is not straight; having one or more bends or angles while twistical is (archaic) crooked; tortuous; hence, perverse; unfair; dishonest.

As a verb crooked

is (crook).