irresoluble /ir-ezˈə-lū-bl or -lŭ-bl/

1. That cannot be resolved into parts
2. That cannot be solved
3. That cannot be got rid of (archaic)

irresolubilˈity noun

• coffins
• coffin ship
• coffin ships
• coffle
• coffles
• coffret
• coffrets
• coffs
• C of I
• cofiring
• C of S
• coft
• cog
• cog.
• COGB
• cogence
• cogences
• cogencies
• cogency
• cogener
• cogeners
• cogent
• cogently
• cogged
• cogger