What does spellchecker mean?
A spellchecker is a software program, online service, or occasionally a person that examines written text for spelling mistakes and proposes possible corrections. It is widely included in word-processing applications, web forms, email systems, and publishing platforms, where it may also identify problems involving grammar, punctuation, capitalization, and repeated words. Spellcheckers are especially useful for catching accidental omissions, misspellings, and commonly confused words, but they cannot reliably judge whether a correctly spelled word is the appropriate word in context. Proper names, specialist terminology, regional spellings, and deliberately unconventional spelling can produce false warnings. For this reason, users are generally advised to treat its suggestions as prompts for review rather than accept every proposed correction automatically. The word is also used informally as a verb, especially in the form "spellcheck," meaning to examine text for spelling errors.
A software program or online tool that checks written text for spelling errors and usually offers suggested corrections.
"The built-in spellchecker highlighted the misspelled heading."
Also written "spell-checker" or as two words. The word normally denotes the tool rather than the process itself.
To check the spelling of text, especially with an automated tool.
"She spellchecked the article before submitting it."
The verb form is less common in formal edited prose than the noun, and the spelling "spellcheck" is often preferred.
Used when referring to multiple tools, applications, services, or people that perform spelling checks.
"The school uses two spellcheckers for different subject areas."
A spellchecker can know every letter in the dictionary and still miss the one mistake that changes everything.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of spellchecker
Spellchecker is a compound formed from "spell" and "checker," both of which are of Germanic origin. "Spell" descends from Old English "spell," referring to a sequence of letters or words, while "checker" was formed by adding the agentive suffix "-er" to "check." The compound became established with the development of electronic writing and word-processing tools, which could check large bodies of text for spelling errors automatically.
Related word forms
How spellchecker is actually used
The compound is commonly written as one word, though "spell-checker" and "spell checker" also occur. As a verb, "spellcheck" is more natural than using "spellchecker" directly.
Easily confused with spellchecker
A spellchecker is usually a tool or program, while spellcheck commonly refers to the act of checking spelling and can also be used as a verb.
A spellchecker detects spelling errors mechanically, whereas a proofreader evaluates the writing for accuracy, clarity, grammar, and style.