nonexistent

Not existent or existing; not real.

"Hrunk" is a nonexistent word.

His social skills are nonexistent: he chewed with his mouth open all through dinner.

Not present or occurring.

Large cranes were virtually non-existent in the areas I worked with this truck, so we jacked everything on and off[.]

The opposite issue emerges in the summer when students face scorching temperatures with unreliable or nonexistent air conditioning.

Something that does not exist.

By showing that no true statements were about nonexistents, he dismissed any facts or knowledge about the so-called beingless.