Related Clues:
- Barbed
- Difficult
- Sticky
- Nettlesome
- Like some plants or problems
- Problematic
- Full of complexities
- Full of difficulties
- Tough to solve
- Like complex questions
- Fraught, as an issue
- Difficult like briar
- Troublesome or difficult, like briars?
- Troublesome or difficult - having spikes?
- Blow it inside to be so sharp