IPA: /ˈθɪkɪʃ/
KK: /θɪkɪʃ/
Somewhat dense or heavy in texture or consistency.
The soup was thickish, making it very filling.
Comparative: thicker
Superlative: thickest
Thickish → It is formed from "thick" (from Old English "þicce", meaning having a large distance between opposite sides) and "-ish" (a suffix meaning somewhat or having the quality of). The word "thickish" means somewhat thick or having a quality of thickness.
Think of something that is 'somewhat thick' — 'thick' describes the quality, and '-ish' indicates a lesser degree.