List: adjectival nouns or quasi-adjectives (keiyodoshi)

Internet slang  expression  な adjective  adjective (generic) 

• who benefits (from that)?, who cares?, who would want that?, who is it meant to appeal to?
• pointless, of benefit to no one, of interest to no one, appealing to no one, extremely niche

onomatopoeic or mimetic word  noun  noun (generic)  adverb  adverb taking the と particle  noun taking the genitive case particle の  adjective (generic)  な adjective  noun or participle taking the aux. verb する 

• bubbliness (of a carbonated drink), sound of bubbles (of a carbonated drink), fluffiness (of a cake, souffle, whipped cream)

noun taking the genitive case particle の  adjective (generic)  な adjective 

• covered in mud, mud-caked

な adjective  adjective (generic) 

• terrible

な adjective  adjective (generic)  Hokkaido-ben 

• quick-tempered, easily offended

な adjective  adjective (generic)  noun  noun (generic) 

• clear and cold (water, etc.)

な adjective  adjective (generic)  noun  noun (generic) 

• strong-backed
• stubborn, persevering, tenacious
• viscous, elastic and sticky, chewy

expression  noun taking the genitive case particle の  adjective (generic)  な adjective  noun  noun (generic) 

• not knowing one's social position, overweening, overreaching, forgetting who one is

expression  な adjective  adjective (generic) 

• out of control, uncontrollable

な adjective  adjective (generic) 

• ambivalent