Synonyms for unidentified

Most common

unknown · anonymous · unnamed · nameless · nondescript

All synonyms

Adjective

Definitions

1. adj. 1

   Not identified; having an unknown or unnamed identity.

Related words

Phrases

unidentified flying object unidentified aerial phenomenon unidentified submarine object unidentified submerged object

Example sentences

• unknown Sami accidentally answered an unknown number call.
• anonymous "John Doe" is a nickname for an anonymous person.
• unnamed There are so many brave people who will forever go unnamed.
• nameless These words were spoken by someone who shall be nameless.
• nondescript He's nondescript, unapproachable and inscrutable.

Popularity over time

Use in printed books, per decade from 1850 to 2019.

By length

7 letters

unknown², unnamed²

8 letters

nameless²

9 letters

anonymous⁴

11 letters

nondescript³

The small number after each word is its number of syllables (unknown² = 2 syllables).