PHANTOM Meaning of PHANTOM in English ■ noun a ghost. ↘a figment of the imagination. ↘[as modifier ] not real; illusory: a ~ conspiracy. OriginME: from OFr. fantosme , based on Gk phantasma (see phantasm ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004