The quality or state of being a dwarf or having dwarf-like characteristics; small or stunted nature.
From 'dwarf' with the noun-forming suffix '-ness.' This creates an abstract noun describing the quality of being dwarfish without the '-ish' intermediary step.
English gives you options—you can say 'dwarfness' or 'dwarfishness' to describe the quality, showing how the language evolved with multiple ways to express similar ideas!
Complete word intelligence in one call. Free tier — 50 lookups/day.