1. Having a short and solid form or stature
   "a thickset young man"
   - compact, heavyset, stocky, thick 
2. Planted or growing close together
   "thickset trees"

See also: concentrated, little, short

• substitutable
• substitute
• substitute teacher
• substituting
• substitution
• substitution class
• substitutional
• substitutionary
• substitutive
• substract
• substrate
• substratum
• substring
• substructure
• subsume
• subsumption
• subsurface
• subsystem
• subtenant
• subtend
• subterfuge
• subterminal
• subterranean
• subterraneous
• subtext