bizarre

Preposterous is a synonym of bizarre.

As adjectives the difference between preposterous and bizarre

is that preposterous is absurd, or contrary to common sense while bizarre is strangely unconventional in style or appearance.

Bizarre is a related term of unorthodox.

As adjectives the difference between bizarre and unorthodox

is that bizarre is strangely unconventional in style or appearance while unorthodox is unusual, unconventional, or idiosyncratic.

Imprudent is a related term of bizarre.

As adjectives the difference between imprudent and bizarre

is that imprudent is not prudent; wanting in prudence or discretion; indiscreet; injudicious; not attentive to consequence; improper while bizarre is strangely unconventional in style or appearance.

Asinine is a related term of bizarre.

As adjectives the difference between asinine and bizarre

is that asinine is failing to exercise intelligence or judgment; ridiculously below average rationality while bizarre is strangely unconventional in style or appearance.

Bizarre is a related term of rare.

As adjectives the difference between bizarre and rare

is that bizarre is strangely unconventional in style or appearance while rare is (cooking|particularly meats) cooked very lightly, so the meat is still red (in the case of steak or beef in the general sense) or rare can be very uncommon; scarce or rare can be (obsolete) early.

As a verb rare is

(us|intransitive) to rear, rise up, start backwards.

Bizarre is a synonym of queer.

As adjectives the difference between bizarre and queer

is that bizarre is strangely unconventional in style or appearance while queer is (now|slightly|dated) weird, odd or different; whimsical.

As a noun queer is

(colloquial) a person who is or appears homosexual, or who has homosexual qualities.

As a verb queer is

to render an endeavor or agreement ineffective or null.

As an adverb queer is

queerly.

Inane is a related term of bizarre.

As adjectives the difference between inane and bizarre

is that inane is lacking sense or meaning (often to the point of boredom or annoyance) while bizarre is strangely unconventional in style or appearance.

As a noun inane

is that which is void or empty.

Insane is a synonym of bizarre.

As adjectives the difference between insane and bizarre

is that insane is exhibiting unsoundness or disorder of mind; not sane; mad; deranged in mind; delirious; distracted while bizarre is strangely unconventional in style or appearance.

Foolish is a related term of bizarre.

As adjectives the difference between foolish and bizarre

is that foolish is lacking good sense or judgement; unwise while bizarre is strangely unconventional in style or appearance.