adjective
1.
Synonyms: close 4, compact, crowded, thick, tight
Related Word: heaped, massed, piled; crammed, crowded, jam-packed
Contrasted words: dispersed, dissipated, scattered; rare, thin; exiguous, meager, scant, scanty, spare
Antonyms: sparse; tenuous
2.
Synonyms: stupid 1, blockheaded, blockish, doltish, dull, dumb, fatheaded, numskulled, thick, thickheaded
Related Word: obtuse; impassive, phlegmatic, stolid; lethargic, sluggish, torpid
Antonyms: subtle; bright