Similar meaning:
* Façade: (noun) - an outward appearance that is maintained to conceal a less pleasant or creditable reality.
* Front: (noun) - a false or superficial appearance.
* Show: (noun) - a deceptive or pretentious display.
* Veneer: (noun) - a superficial or decorative layer that conceals a less attractive reality.
* Mask: (noun) - something that hides or disguises the true nature of something.
Antonyms:
* Authenticity: (noun) - genuineness; the quality of being real or true.
* Sincerity: (noun) - honesty; the quality of being genuine and free from pretense.
* Transparency: (noun) - the quality of being open and honest; the state of being easily understood.
Related terms:
* Facadism: (noun) - the practice of preserving the facade of a historic building while replacing or altering the interior or structure.
* Facadectomy: (noun) - the removal of a building facade.
It's important to note that while these words share some overlap in meaning, they are not always interchangeable. The best word to use will depend on the specific context.