say it: THI-klee
thickly is an adverb meaning "spoken with poor articulation as if with a thick tongue". It carries 5 recorded senses.
spoken with poor articulation as if with a thick tongue
“after a few drinks he was beginning to speak thickly”
with 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”
Definitions, synonyms and semantic relations for thickly come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.