The Suffix of Weakness: Exploring -Asthenia

From the Greek asthéneia (“weakness”), -asthenia denotes loss of strength, physical, mental, or spiritual. Once medical, it now speaks to the quiet fatigue of modern life and the slow fading of vitality.

SUFFIXES600 - APPLIED SCIENCES

MoribundMurdoch

5/8/20241 min read

-asthenia

(suffix)

Etymology: From Greek asthéneia (ἀσθένεια), meaning “weakness” or “lack of strength,” derived from a- (“without”) + sthenos (“strength, vigor”).

Definition:

  1. Medical: Denotes weakness, debility, or loss of strength—particularly used in compound medical terms referring to physical, nervous, or functional exhaustion.

  2. Extended use: Indicates fragility or deficiency in vitality, energy, or resilience, whether of the body, mind, or system.

Examples:

  • Neurasthenia — nervous exhaustion or weakness.

  • Myasthenia — muscular weakness or fatigue.

  • Asthenopia — weakness of the eyes (visual fatigue).

Figurative use:
In broader or metaphorical contexts, -asthenia can connote spiritual or cultural frailty, as in moral asthenia or civilizational asthenia—the gradual loss of vitality or conviction in a society or worldview.

See also: -sthenic, -algia, -pathy