unearthly
Word family
Synonym discussion
Sense: adjective/2
All four words describe things that feel strange or beyond normal experience, but they differ in what causes the strangeness. 'Eerie' is the closest to 'unearthly' in everyday use — it describes a creepy, unsettling feeling, often in a quiet or abandoned place ('an eerie silence'). 'Uncanny' refers to something that is strangely familiar, like a robot that looks almost human but not quite ('an uncanny resemblance'). 'Supernatural' goes further by implying a cause outside the laws of nature, such as ghosts or magic ('supernatural powers'). 'Otherworldly' suggests that something belongs to a different realm or dimension, not necessarily frightening but clearly not of this world ('an otherworldly landscape'). Choosing among them depends on whether you want to emphasize fear (eerie), the unsettling near-familiar (uncanny), magical causation (supernatural), or a sense of alien origin (otherworldly). For example: 'The unearthly glow turned out to be a flashlight — not supernatural, just eerie in the dark.'
Common collocations
Etymology
Formed in English around 1600 from the prefix 'un-' (meaning 'not') and 'earthly' (from Old English 'eorþe', meaning 'ground, soil, world'). The earliest uses described things 'not of this world' — spiritual or celestial. By the early 1700s, the meaning expanded to cover anything strange or supernatural ('an unearthly cry'). The time-related sense ('an unearthly hour') developed in the 1800s, probably from the idea that getting up at 4 a.m. is 'not of this world' in its unreasonableness.