phantom

Etymology

From Old French 'fantosme' (phantom, ghost), from Latin 'phantasma' (apparition, spectre), from Greek 'phantasma' (an image, an apparition), from 'phantazein' (to make visible, to display), from 'phainein' (to show, to bring to light), from Proto-Indo-European *bʰeh₂- (to shine). The same Greek root produced 'phenomenon' (something that appears), 'fantasy' (an imagined appearance), 'fancy' (a shortened form of fantasy), 'phase' (an appearance), and 'epiphany' (a shining forth). The spelling with 'ph-' reflects the Greek origin; Old French had simplified it to 'f-' (fantôme), and English wavered between both spellings for centuries before settling on 'phantom.' Key roots: phainein (Ancient Greek: "to show, to make visible").

Phantom traces back to Ancient Greek phainein, meaning "to show, to make visible". Across languages it shares form or sense with French fantôme, Spanish fantasma, German Phantom and Italian fantasma, evidence of a shared etymological family.