dense
Syn: solid,
compact,
crowded,
packed,
thick,
cloudy,
opaque,
abstruse,
difficult,
hard,
incomprehensible,
obscure,
tough,
dumb,
slow,
stupid
Ant: diffuse,
few and far between,
scattered,
sparse,
rarefied,
thin,
clear,
diaphanous,
see-through,
translucent,
transparent,
comprehensible,
easy,
simple,
straightforward,
understandable,
meager,
bright,
canny,
intelligent,
quick,
quick-witted,
smart
Wikipedia foundation.