1. Not easily solved
   - insolvable, unsolvable, unresolvable

See also: insoluble

• Jubbulpore
• jube
• jubilance
• jubilancy
• jubilant
• jubilantly
• jubilate
• jubilation
• jubilee
• Juda
• Judaea
• Judaeo-
• Judah
• Judaic
• Judaica
• Judaical
• Judaism
• judas
• Judas Iscariot
• Judas Maccabaeus
• Judas tree
• judder
• judder bar
• Jude
• Judea