What does debilitate mean?
To debilitate is to make someone or something markedly weaker — physically, mentally, or structurally. The verb is most often applied to health: an illness, injury, or treatment can debilitate a patient, leaving them exhausted or frail. By extension, it describes anything that saps the strength of a system or institution, as when corruption debilitates a government's capacity to govern. Debilitate carries a formal register and appears chiefly in medical writing, journalism, and academic prose rather than casual conversation. Its participial adjective form, 'debilitating', is especially common — a debilitating migraine, for instance, is one severe enough to stop normal life. The word derives from the Latin debilis, meaning weak or feeble, and entered English in the sixteenth century. It connotes gradual, serious erosion of strength rather than momentary tiredness, which makes it a precise and vivid choice when ordinary words like 'tire' or 'weaken' would understate the damage being described.
To make someone or something physically or mentally weak; to deprive of strength or vigor.
"The tropical fever debilitated the crew until they could barely stand their watch."
Typically used transitively and in formal registers; the passive and participle forms are especially frequent in medical writing.
To undermine the strength or effectiveness of an organization, economy, or other abstract entity.
"A decade of sanctions debilitated the nation's industrial base."
An extended, figurative sense common in political and economic commentary.
From the Latin debilis — literally 'away from strength' — debilitate shares its ancient roots with our word 'able': it is, at heart, the act of making someone unable.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of debilitate
Debilitate comes from the Latin verb debilitare, meaning 'to weaken', formed on the adjective debilis ('weak, feeble'), which itself combines the prefix de- ('away from') with a root connected to habere, 'to have or hold'. English adopted the word in the sixteenth century, alongside the noun debility. It shares this Latin lineage with rehabilitate and ultimately with ability and habit, all descendants of the same root expressing possession or capability.
Related word forms
How debilitate is actually used
Debilitate is formal and often appears in medical, scientific, and journalistic contexts. It frequently occurs in its participial forms 'debilitated' and 'debilitating' (as in 'a debilitating illness'), which are more common in everyday usage than the bare verb.
Easily confused with debilitate
Though spelled similarly, 'deviate' means to depart from an accepted course or standard, while 'debilitate' means to weaken.