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un·known

unknown

 
 
pronunciation:
uhn non
features:
Word Parts
part of speech: adjective
definition: not known; not familiar.
The cause of the fire remains unknown.
antonyms:
eminent, famous, identified, prominent, renowned, well-known
similar words:
strange
Word Parts  About this feature
The word unknown contains the following part:
un-1 Old English prefix that means not
Show wordsHide wordsMore about this word part:
The prefix un1 attaches to adjectives to create adjectives that mean the opposite of the base word.
synonyms:
dis-, de-, in-2