gen. Falsely alleged; invalid, non-existent.

a non-existent place, nowhere (sometimes as a notional address).

Non-existent. Obsolete. rare.

Non-existent.

Not existing; having no existence; non-existent. (In quot. 1704, said of a state in which the person is as if non-existent.)

That does not exist or have being.

That does not subsist.

Not endowed with being.

(un-, prefix1 affix 1.)

= non-existent, adj.

Chiefly Science. Amounting to nothing; nil; non-existent; esp. designating or relating to a point, region, or state in which no effect or force…

(un-, prefix1 affix 4.)

Existing nowhere.

= non-entitious, adj. Cf. non-entitative, adj., non-entitive, adj.

That has no being, non-existent.

= non-entitative, adj.

That has no substance; = non-entitive, adj. Cf. non-entitious, adj., non-entitous, adj.

Containing, reporting, or consisting of nothing; non-existent.