This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Having existence only in the imagination; unreal.

adj. Mathematics Of or being the coefficient of the imaginary unit in a complex number.

adj. Mathematics Of, involving, or being an imaginary number.

adj. Mathematics Involving only a complex number of which the real part is zero.

n. Mathematics An imaginary number.

adj. existing only in the imagination

adj. of a number, having no real part; that part of a complex number which is a multiple of the square root of -1.

adj. Existing only in imagination or fancy; not real; fancied; visionary; ideal.

n. An imaginary expression or quantity.

Existing only in imagination or fancy; due to erroneous belief or conception; not real; baseless; fancied: opposed to actual.

In mathematics, unreal and feigned in accordance with the theory of imaginary quantities.

Synonyms Ideal, fanciful, fancied, visionary, unreal, shadowy, Utopian. Imaginary and imaginative are never synonymous: imaginary means existing only in the imagination; imaginative means possessed of or showing an active imagination.

n. In algebra, an imaginary expression or quantity.

adj. not based on fact; unreal

n. (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1

"In fact, psychologists use the term "imaginary audience" to describe this heightened state of vigilance that is especially strong during adolescence."

unreal    imaginary quantity   

actual   

imaginary number    conjugate imaginaries    imaginary projection    pure imaginary    imaginary tangent    imaginary exponent    imaginary integral    imaginary coördinate    imaginary transformation    imaginary point   

visionary    unreal    fancied    illusive    chimerical    ideal    fanciful    fancy    invented    fictitious   

only    invisible    innumerable    earthly    mysterious    spiritual