insulse /in-sulsˈ/ (rare)

1. Lacking wit
2. Dull, stupid
3. Tasteless, insipid

insulˈsity noun

Stupidity

• diamondback moth
• diamondback moths
• diamondbacks
• diamond-beetle
• diamond-beetles
• diamond bird
• diamond birds
• Diamond-Blackfan anaemia
• Diamond-Blackfan anaemias
• diamond-cut
• diamond cut diamond
• diamond dove
• diamond doves
• diamond-drill
• diamond-drills
• diamond-dust
• diamonded
• diamond-field
• diamond-fields
• diamond-hitch
• diamond-hitches
• diamondiferous
• diamond in the rough
• diamond jubilee
• diamond jubilees