What does eradicate mean?
To eradicate something is to destroy it so thoroughly that nothing remains — to eliminate it root and branch. The word is most often applied to large-scale problems that societies set out to abolish: infectious diseases such as smallpox and polio, pests and invasive species, as well as social evils like poverty, corruption, and illiteracy. Its connotations are purposeful and often hopeful, evoking sustained campaigns rather than casual cleanup. Derived from the Latin radix, meaning 'root,' eradicate originally carried the literal sense of pulling a plant up by its roots, and that image still colours its figurative use: an eradicated problem is one that cannot grow back. The word sits in a formal register and is common in journalism, public-health writing, and policy discussion. Related forms include the noun eradication and the adjective eradicable. Because eradication implies totality, the word should be used deliberately: to say a disease has been eradicated is a strong claim, distinct from merely reducing or controlling it.
verbTo destroy or get rid of something completely, so that it no longer exists; to pull up by the roots, literally or figuratively.
- To destroy something completely, especially a disease, pest, or social problem, so that it no longer exists anywhere.
- (Less common, literal) To pull up or tear out by the roots.
"Global vaccination campaigns have come close to eradicating smallpox and polio."
"The WHO-led campaign succeeded in eradicating smallpox worldwide by 1980."
"New legislation aims to eradicate corruption from public procurement."
Eradicate literally meant 'to yank out by the roots' in Latin — the same 'radix' (root) that gives us 'radish' and 'radical.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of eradicate
Eradicate comes from the Latin eradicare, formed from e- ('out') plus radix ('root'), so its original sense was to tear something up by the roots. English adopted the verb in the early 17th century, at first for the literal uprooting of plants before the figurative sense of destroying a problem became dominant. It shares this Latin root with 'radical' (which originally meant 'of roots'), the vegetable 'radish,' and mathematical terms built on 'radix.'
Related word forms
How eradicate is actually used
Formal to neutral register. Strongly associated with diseases, pests, poverty, illiteracy, and other problems framed as things to be wiped out globally or systematically. Because the word implies total elimination, it is stronger than 'reduce' or 'control' and is best reserved for contexts where complete removal is genuinely intended.
Easily confused with eradicate
'Irradiate' means to expose to radiation or light, while 'eradicate' means to destroy completely — the words look similar but are unrelated in meaning.
'Aberrate' means to deviate from what is normal or expected, whereas 'eradicate' means to eliminate entirely.