Open English Wordnet
Adverbs
(r)thicklyspoken with poor articulation as if with a thick tongue“after a few drinks he was beginning to speak thickly” (r)densely, thicklyin a concentrated manner“old houses are often so densely packed that perhaps three or four have to be demolished for every new one built”,
“a thickly populated area” (r)thickly, thickwith a thick consistency“the blood was flowing thick” (r)thicklywith thickness; in a thick manner“spread 1/4 lb softened margarine or cooking fat fairly thickly all over the surface”,
“we were visiting a small, thickly walled and lovely town with straggling outskirt” (r)thick, thicklyin quick succession“misfortunes come fast and thick”