dense

adj.

[1]	compact , thick , compressed , condensed , close , solid , heavy , impenetrable
[2]	crowded , packed , tight , impenetrable , impassable
[3]	stupid , slow , slow-witted , thickheaded , dull , thick-witted , obtuse , stolid , dim , dim-witted , foolish , (Colloq) thick , dumb