Haggard means looking exhausted and worn out. A haggard face, look haggard, haggard with worry.
It describes the face rather than the body: hollow eyes, drawn skin, the look of somebody who has not slept or has been under strain for a long time. It is not about age. The word came from falconry, where a haggard was a wild hawk caught as an adult and famously hard to tame — the wild look transferred to the human face.
1adjectivehaggardLooking exhausted and worn out.
“After a week of night shifts, the young doctor looked pale and haggard.”
haggard is a quality of exhaustion.
Middle French hagard meant a wild hawk taken as an adult. The bird's wild staring look gave English the word for a worn human face.
Middle High German
hag — coppice
Old French
faulcon
Middle French
haggard
English, today
haggard
Built from
From Middle French haggard, from Old French faulcon hagard (“wild falcon”) (> French hagard (“dazed”)), from Middle High German hag (“coppice”) (> archaic German Hag (“hedge, grove”)). Akin to Frankish hagia (> French haie (“hedge”))
Etymology from Wiktionary, CC BY-SA
Practised in A Song of Ice and Fire