What does deregister mean?
To deregister is to remove a person, organization, asset, or item from an official register — the authoritative list on which its registered status is recorded. The verb is chiefly administrative and formal, appearing constantly in regulatory, corporate, legal, and academic language: a regulator may deregister a company for non-compliance, a professional body may deregister a practitioner found guilty of misconduct, or a student may deregister from a course they no longer wish to take. It is frequently used in the passive voice, as in "the charity was deregistered," and it carries neutral-to-negative connotations depending on context — voluntary deregistration is routine, while being deregistered by an authority often signals censure or penalty. Its noun form is "deregistration." The word is built transparently from the prefix "de-" plus "register," making its meaning immediately inferable even to readers encountering it for the first time.
To remove someone or something from an official register or list of registered entities.
"The court ordered the trademark to be deregistered."
Commonly passive in regulatory contexts; transitive when an authority acts, reflexive or intransitive when withdrawing voluntarily.
To withdraw oneself from enrollment in a course, program, or membership.
"She decided to deregister from the seminar after the schedule changed."
One signature can undo years of official existence — when a company is deregistered, it legally ceases to exist as if it never was.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of deregister
Deregister is formed from the prefix "de-", indicating reversal or removal, attached to "register," which entered English in the 14th–15th century from Old French "registre," ultimately from Latin "registrum" or "regesta" — things recorded, from "regere," meaning to rule or direct. The compound arose in modern administrative English, likely in the 19th or 20th century, as bureaucratic record-keeping expanded and the need grew for a term describing removal from such records. It shares this Latin root with related terms such as registration, registrar, and registry.
Related word forms
How deregister is actually used
Formal and administrative in tone; common in legal, regulatory, corporate, and academic contexts. Often used in the passive ("was deregistered").
Easily confused with deregister
"Register" means to enter something on an official list, while "deregister" means the opposite — to remove it from that list.