unknown
Translation
unknown, unfamiliar, anonymous
Examples
The cause of the fire is unknown.
The cause of the fire is unknown.
He was an unknown actor before the movie.
He was an unknown actor before the film.
Grammar Patterns
((sth.)) is unknown ...is not known The cause of the accident is unknown.
an unknown ((noun)) an anonymous or unfamiliar (noun) He is an unknown writer.
Similar Words
Synonyms: unfamiliar, mysterious, anonymous; Antonyms: known, famous, familiar
Etymology
From the prefix 'un-' (not) and 'known' (past participle of know).
Memory Tips
Think of the prefix 'un-' as meaning 'not'. So, 'unknown' is simply 'not known'.