illogical

As an adjective illogical

is contrary to logic; lacking sense or sound reasoning.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As adjectives the difference between illogical and pathological

is that illogical is contrary to logic; lacking sense or sound reasoning while pathological is (medicine) pertaining to pathology.

As an adjective illogical

is contrary to logic; lacking sense or sound reasoning.

As a noun rationale is

an explanation of the basis or fundamental reasons for something.

As adjectives the difference between incoherent and illogical

is that incoherent is incoherent (not coherent) while illogical is contrary to logic; lacking sense or sound reasoning.

As adjectives the difference between illogical and dumb

is that illogical is contrary to logic; lacking sense or sound reasoning while dumb is (label) unable to speak; lacking power of speech.

As a verb dumb is

to silence.

As adjectives the difference between illogical and impossible

is that illogical is contrary to logic; lacking sense or sound reasoning while impossible is not possible; not able to be done or happen.

As a noun impossible is

an impossibility.

As adjectives the difference between illogical and cogent

is that illogical is contrary to logic; lacking sense or sound reasoning while cogent is reasonable and convincing; based on evidence.

As adjectives the difference between illogical and undefined

is that illogical is contrary to logic; lacking sense or sound reasoning while undefined is lacking a definition or value.

As adjectives the difference between disingenuous and illogical

is that disingenuous is not noble; unbecoming true honor or dignity; mean; unworthy; fake or deceptive while illogical is contrary to logic; lacking sense or sound reasoning.