Synonyms for unauthorized

Most common

illegitimate · unlicensed

All synonyms

Adjective

Antonyms

authorized, authorised, authoritative

All antonyms of unauthorized →

Definitions

1. adj. 1

   Not having any authority.

Related words

Other spellings

unauthorised UK

Example sentences

• illegitimate The king had numerous illegitimate children with her.
• unlicensed "Do you drive an unlicensed taxi?" I asked him.

Popularity over time

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

By length

10 letters

unofficial⁴, unlicensed³, unlicenced

12 letters

illegitimate⁵

The small number after each word is its number of syllables (unofficial⁴ = 4 syllables).