Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb jam

7 senses of jam

Sense 1
throng, mob, pack, pile, jam -- (press tightly together or cram; "The crowd packed the auditorium")
       => crowd, crowd together -- (to gather together in large numbers; "men in straw boaters and waxed mustaches crowded the verandah")

Sense 2
jam -- (push down forcibly; "The driver jammed the brake pedal to the floor")
       => push, force -- (move with force, "He pushed the table into a corner")

Sense 3
jam, crush -- (crush or bruise; "jam a toe")
       => bruise, contuse -- (injure the underlying soft tissue or bone of; "I bruised my knee")

Sense 4
jam, block -- (interfere with or prevent the reception of signals; "Jam the Voice of America"; "block the signals emitted by this station")
       => interrupt, disrupt, break up, cut off -- (make a break in; "We interrupt the program for the following messages")

Sense 5
jam -- (get stuck and immobilized; "the mechanism jammed")
       => malfunction, misfunction -- (fail to function or function improperly; "the coffee maker malfunctioned")

Sense 6
jam, jampack, ram, chock up, cram, wad -- (crowd or pack to capacity; "the theater was jampacked")
       => stuff -- (cram into a cavity; "The child stuffed candy into his pockets")

Sense 7
obstruct, obturate, impede, occlude, jam, block, close up -- (block passage through; "obstruct the path")
       => impede, hinder -- (be a hindrance or obstacle to; "She is impeding the progress of our project")

Antonyms of adj jammed

1 sense of jammed

Sense 1
jammed, jam-packed, packed -- (filled to capacity; "a suitcase jammed with dirty clothes"; "stands jam-packed with fans"; "a packed theater")

INDIRECT (VIA crowded) -> uncrowded -- (having or allowing sufficient room; "an uncrowded train"; "an uncrowded view")

Similarity of adj jammed

1 sense of jammed

Sense 1
jammed, jam-packed, packed -- (filled to capacity; "a suitcase jammed with dirty clothes"; "stands jam-packed with fans"; "a packed theater")
       => crowded (vs. uncrowded) -- (overfilled or compacted or concentrated; "a crowded theater"; "a crowded program"; "crowded trains"; "a young mother's crowded days")