Related Clues:
- It's a struggle for amphibian to get round
- Detective's first to remove uniform in US venture
- Strenuous endeavour
- Work - application
- Exertion - attempt - achievement
- Try - labour - pains
- Attempt - hard work
- Endeavour — exertion
- Determined undertaking
- Hard mental or physical work
- Try — exertion
- It¿s generally worth it for energy
- Determined attempt to turn-up iron near castle
- Determined attempt to initially entice force to go to old army stronghold
- Sincere attempt