illogical

As adjectives the difference between illogical and stupid

is that illogical is contrary to logic; lacking sense or sound reasoning while stupid is lacking in intelligence or exhibiting the quality of having been done by someone lacking in intelligence.

As an adverb stupid is

extremely.

As a noun stupid is

a stupid person; a fool.

As an adjective illogical is

contrary to logic; lacking sense or sound reasoning.

Illogical is a related term of ridiculous.

As adjectives the difference between illogical and ridiculous

is that illogical is contrary to logic; lacking sense or sound reasoning while ridiculous is deserving of ridicule; foolish; absurd.

As adjectives the difference between illogical and nonsensical

is that illogical is contrary to logic; lacking sense or sound reasoning while nonsensical is without sense; unmeaning; absurd; foolish; irrational; preposterous.

Illogical is a related term of farcical.

As adjectives the difference between illogical and farcical

is that illogical is contrary to logic; lacking sense or sound reasoning while farcical is resembling a farce; ludicrous; absurd.

Illogical is a related term of wild.

As an adjective illogical

is contrary to logic; lacking sense or sound reasoning.

As a proper noun wild is

for a wild person, or for someone living in uncultivated land.

As adjectives the difference between unreasonable and illogical

is that unreasonable is not reasonable while illogical is contrary to logic; lacking sense or sound reasoning.

As adjectives the difference between illogical and crazy

is that illogical is contrary to logic; lacking sense or sound reasoning while crazy is insane; lunatic; demented.

As an adverb crazy is

very, extremely.

As a noun crazy is

an insane or eccentric person; a crackpot.

Illogical is a related term of silly.

As adjectives the difference between illogical and silly

is that illogical is contrary to logic; lacking sense or sound reasoning while silly is (label) pitiable; deserving of compassion; helpless.

As a noun silly is

(colloquial) a silly person; a fool.

As adjectives the difference between illogical and foolish

is that illogical is contrary to logic; lacking sense or sound reasoning while foolish is lacking good sense or judgement; unwise.