mental institution

noun

"mental-institution" is a 17-letter English headword indexed on PlainSpell.

The verdict

“mental institution” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
18
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A psychiatric hospital, or the psychiatric ward of a hospital.

Corpus desk

Index EN-mental-institution · mental institution · English

mental institution · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 18 letters
  • VOW-7 7 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "M" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for mental institution
PropertyValue
Headwordmental institution
LanguageEnglish
Part of speechNoun
Letters18
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “mental institution” in English

mental institutionfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

mental institution is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A psychiatric hospital, or the psychiatric ward of a hospital.".

The misspelling generator found no plausible variants for mental institution, and the word's spelling is regular enough that our generator found nothing worth flagging. No close-neighbour confusable shows up for this headword in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

This headword's origin isn't recorded in our source data, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is mental institution, spelled M-E-N-T-A-L- -I-N-S-T-I-T-U-T-I-O-N.

Definition

  1. 1
    A psychiatric hospital, or the psychiatric ward of a hospital.

Recorded use

Wiktionary example

These source excerpts show how mental institution appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. It fails to protect our magnificent, law-abiding American citizens, but provides sanctuary and protection for dangerous criminals, many from prisons and mental institutions that have illegally entered our country from all over the world.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "mental institution"?
"mental institution" is spelled M-E-N-T-A-L- -I-N-S-T-I-T-U-T-I-O-N.
What does "mental institution" mean?
As a noun, "mental institution" means: A psychiatric hospital, or the psychiatric ward of a hospital.
What language does "mental institution" come from?
"mental institution" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list