Infirm

Part of speech: adjective

Pronunciation: /ɪnˈfɜːm/

Definitions

1. Marked by a lack of strength or vitality, often linked to sickness or old age
2. Relating to a condition of reduced physical capability, usually due to chronic health issues or advanced years
3. Characterized by a state of weakness or fragility often stemming from health problems or aging

Etymology: Latin "infirmus" was built from "in-", meaning "not", and "firmus", meaning "firm, strong, steady". So the word's core meaning is simply "not firm", a body or structure that lacks solidity. The same root gave English "firm" itself, which reached the language from Old French and carries the same sense of steadiness. "Infirm" is therefore a near-opposite pairing: one word describes what holds, the other what gives way. English took the adjective in its Latin-influenced form from Middle English "infirme", so it has been used for weakness since the medieval period. The sense was originally broad, covering weakness of any kind, and the narrower association with illness developed over time. Its close relative "infirmary", a place for the sick, shares the same root, which explains why the idea of frailty and care often travel together in this family of words.

Synonyms: weak, feeble, unwell

Antonyms: strong, healthy