"thickest" in the adjective sense
1. thick
not thin of a specific thickness or of relatively great extent from one surface to the opposite usually in the smallest of the three solid dimensions
"an inch thick"
"a thick board"
"a thick sandwich"
"spread a thick layer of butter"
"thick coating of dust"
"thick warm blankets"
2. thick
having component parts closely crowded together
"a compact shopping center"
"a dense population"
"thick crowds"
"a thick forest"
"thick hair"
3. thick
relatively dense in consistency
"thick cream"
"thick soup"
"thick smoke"
"thick fog"
4. slurred, thick
spoken as if with a thick tongue
"the thick speech of a drunkard"
"his words were slurred"
5. compact, heavyset, stocky, thick, thickset
having a short and solid form or stature
"a wrestler of compact build"
"he was tall and heavyset"
"stocky legs"
"a thickset young man"
6. dense, thick
hard to pass through because of dense growth
"dense vegetation"
"thick woods"
7. thick, deep
of darkness) densely dark
"thick night"
"thick darkness"
"a face in deep shadow"
"deep night"
8. chummy, buddy-buddy, thick
used informally) associated on close terms
"a close friend"
"the bartender was chummy with the regular customers"
"the two were thick as thieves for months"
9. blockheaded, boneheaded, duncical, duncish, fatheaded, loggerheaded, thick, thickheaded, thick-skulled, wooden-headed
used informally) stupid
10. thick
abounding having a lot of
"the top was thick with dust"
Source: WordNet® (An amazing lexical database of English)
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