What does invalided mean?
“Invalided” is the past tense and past participle of “invalidate,” meaning to make something no longer valid. It is used when a document, contract, claim, result, or decision is rendered legally ineffective, logically unsound, or otherwise unusable. The word is often stronger and more formal than “cancel,” especially in legal, scientific, and administrative contexts: evidence can invalidate a conclusion, or a procedural error can invalidate an official decision. In British and Commonwealth usage, “invalided” can also refer to a person who has been declared unfit for duty, commonly because of illness or disability. This broader institutional sense is less common in modern American English. Overall, “invalided” is a useful formal word for describing the process of depriving a claim or official act of validity.
To make something invalid or no longer valid.
"The error in the calculation invalidated the report."
Common in formal, legal, scientific, and administrative contexts.
Chiefly British: to declare a person unfit for duty because of illness or disability.
"He was invalided from service after sustaining a serious injury."
Chiefly British and Commonwealth usage, especially in military, medical, and employment contexts.
A single piece of evidence can invalidate an entire argument, contract, or official decision.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does invalided come from?
The word comes from “invalidate,” formed from the Latin prefix in-, meaning “not,” and validus, meaning “valid” or “sound.” The English verb “invalidate” developed in the 16th century and was initially associated especially with legal and official proceedings. The suffix “-ed” forms the past tense and past participle “invalided.” Related English forms include “invalid” and “invalidity,” while cognates exist in several other European languages.
Related word forms
How invalided is actually used
The standard general sense is the past tense or past participle of “invalidate.” The sense meaning to declare someone unfit for duty is chiefly associated with British and Commonwealth administrative or military usage.
Easily confused with invalided
“Invalid” describes something that is not valid, whereas “invalided” usually describes the act of making it invalid or the state of having been declared invalid.