1. lacking strength or energy; weak or feeble
Usage: formal or medical usage
2. relating to or characterized by asthenia; marked by loss of strength or vitality
Usage: medical or psychological term

Examples

• After weeks of illness, he felt asthenic and struggled to climb the stairs.
• The patient's asthenic condition required careful monitoring and rest.
• Her asthenic frame belied her determined spirit.
• The disease left him in an asthenic state for months.
• Asthenic symptoms often accompany prolonged stress and fatigue.