adj, verb ·1 syllable ·Common ·High school level

Definitions

Verb

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

Adjective

1. 1
   Stuck.

   "The window is jammed shut."

2. 2
   Overcrowded; congested.

   "Certain routes of the city are heavily jammed."

3. 3
   Rendered unusable by intentional interference.

   "All their broadcasts are jammed."

Adjective

1. 1
   extremely crowed or filled to capacity wordnet

Synonyms

All synonyms

agroundalivealive withanchoredarrestedaware

Antonyms

All antonyms

empty

Example

More examples

"The trains were jammed with commuters."

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