Synonyms for imaginable
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conceivable, thinkable, comprehensible, apprehensible, credible, sensible, possible, plausible, believable, conjecturable, supposable, reasonable, calculable; see also convincing, likely 1.
Antonyms unimaginable, unbelievable*, inconceivable.
See imaginable in Webster's New World Roget's A-Z Thesaurus II
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