adj, verb ·4 syllables ·Rare ·Advanced level

Definitions

Verb

1. 1
   simple past and past participle of unregister form-of, participle, past

Adjective

1. 1
   Not registered. not-comparable

Adjective

1. 1
   (a boat or vessel) not furnished with official documents wordnet
2. 2
   not registered wordnet
3. 3
   (of animals) not recorded with or certified by an official breed association wordnet

Synonyms

All synonyms

undocumentedunlisted

Antonyms

All antonyms

registered

Example

More examples

"It is OK to redistribute the unregistered trial version."

Etymology

Etymology 1

From un- + registered.

Etymology 2

See unregister.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.