Example : After a few drinks he was beginning to speak thickly.

Example : 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.

Synonyms : densely

Example : The blood was flowing thick.

Synonyms : thick

Example : 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.

Example : Misfortunes come fast and thick.

Synonyms : thick