1) воображаемый, нереальный, фиктивный 2) мнимый; необоснованный 3) математика мнимое число; комплексное число; мнимый; комплексный
прилагательное 1) воображаемый; нереальный Синоним(ы): fictitious, unreal, imaginative 2) мнимый
adjective 1. a. existing only in imagination; lacking factual reality b. formed or characterized imaginatively or arbitrarily Example: his canvases, chiefly imaginary, somber landscapes — Current Biography 2. containing or relating to the imaginary unit Example: imaginary roots • imaginarily adverb • imaginariness noun Synonyms: imaginary, fanciful, visionary, fantastic, chimerical, quixotic mean unreal or unbelievable. imaginary applies to something which is fictitious and purely the product of one's imagination Example: an imaginary desert isle. fanciful suggests the free play of the imagination Example: a teller of fanciful stories. visionary stresses impracticality or incapability of realization Example: visionary schemes. fantastic implies incredibility or strangeness beyond belief Example: a fantastic world inhabited by monsters. chimerical combines the implication of visionary and fantastic Example: chimerical dreams of future progress. quixotic implies a devotion to romantic or chivalrous ideals unrestrained by ordinary prudence and common sense Example: a quixotic crusade.