Related Clues:

• Good man with a bird showing vigour
• Endurance shown by southern army besieging dictator
• African dictator, after time held by storm troopers, shows ability to keep going
• A man, it's supposed, has staying power
• Enduring energy
• Power at mains switches
• Endurance in a short time shown among Southern volunteers
• A man, it's supposed, has staying power
• Ability to stay the course
• Triathlete's asset
• Vigour gives life to non-European revolutionary
• Endurance of man? It's beaten by females at the centre
• Tantric sex requirement
• Something a long-distance runner needs
• Indefatigability