Synonyms of imagined

2 Syllables
feigned, unreal, fancied, unseen
3 Syllables
fanciful, fictional, notional, stochastic, vicarious, deputed, storybook, curtained, invented, fictive, chimeral, dreamed-up, chimeric, fictitious, suspected, ungrounded
4 Syllables
nonexistent, insubstantial, refutable
5 Syllables
substitutional, hypothetical, imaginary