insoluble /in-solˈū-bl/

1. Not capable of being dissolved
2. Not capable of being solved or explained

insolubilˈity or insolˈubleness noun

• yellow-boy
• yellow-boys
• yellow brick road
• yellow brick roads
• yellow bunting
• yellow buntings
• yellowcake
• yellowcakes
• yellow card
• yellow cards
• yellow centaury
• yellow dog
• yellow-dog contract
• yellow dogs
• yellow earth
• yellow earths
• yellowed
• yellower
• yellowest
• yellow-eyed grass
• yellow-eyed grasses
• yellow fever
• yellow fevers
• yellowfin
• yellowfins