Synonyms of dense

1 Syllable

crass, hard, firm, firms, lush, sro, dull, tough, gross, tight, wild

2 Syllables

firmest, loutish, stupid, doltish, swinish, cloddish, crasser, ferrous, smoggiest, firmer, wilder, nescient, toughest, cloudier, tightest, irons, compact, dopey, rocker, crowded, ferric, lightless, unlit, turbid, cloudy, solid, lagging, roily, grossest, dopier, grosser, cloudiest, duller, thronged, harder, skintight, steeler, dullest, weightier, weighty, crassest, lusher, clownish, hardest, grossed, wildest, tougher, fatuous, smoggy, iron, stolid, tighter

3 Syllables

stupidest, clodhopping, appressed, obtuse, populous, thickskulled, fine-grained, nonporous, compacting, thick-headed, sardined, dimwitted, blockheaded, ignorant, thickheaded, luxuriant, slow-witted, hard-bitten, unstudious, hard-handed, pigheaded, moronic

4 Syllables

bad-mannered, fuliginous, unscholarly, uninstructed, close-grained, impermeable, simple-minded, emulsified, loggerheaded, fructiferous, close-fitting, boneheaded

5 Syllables

unknowledgeable, unprogressive, incompressible, sedimentary, unintellectual, elbow-to-elbow, unintelligent, semitropical

6 Syllables

undomesticated, overpopulated, unilluminated