lunatic
/ˈluːnətɪk/
"lunatic" is a 7-letter English headword indexed on PlainSpell.
The verdict
“lunatic” is a moderately-common English word, ranked #16,521 in English word frequency and used as a noun.
- #16,521
- frequency rank, English
- 7
- letters
- 10
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An insane person.
| Property | Value |
|---|---|
| Headword | lunatic |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈluːnətɪk/ |
| Letters | 7 |
| Frequency rank | #16,521 |
| Misspellings tracked | 10 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “lunatic” sits in English frequency
Spelling & Dictionary Insight
The English entry for lunatic is 7 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈluːnətɪk/. Corpus data places it at rank #16,521 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "An insane person.".
Our generated misspelling index lists 10 likely wrong-spelling variants for lunatic, with forms such as "llunatic", "lnuatic", and "luantic". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. We don't track a confusable pairing for this entry, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From Middle English lunatik, from Old French lunatique, from Late Latin lunaticus (“moonstruck”), derived from Latin luna (“moon”), the connection stemming from the belief that changes of the moon caused intermittent insanity. The correct English form is lunatic, spelled L-U-N-A-T-I-C.
Definition
- 1An insane person.
Etymology
From Middle English lunatik, from Old French lunatique, from Late Latin lunaticus (“moonstruck”), derived from Latin luna (“moon”), the connection stemming from the belief that changes of the moon caused intermittent insanity.
This word in other languages
Common misspellings
Also misspelled as: llunatic,lnuatic,luantic,lunaitc,lunatci,lunaticc,lunattic,lunnatic,luntaic,ulnatic
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of lunatic - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “lunatic”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is L-U-N-A-T-I-C - every other letter order is a misspelling in standard orthography.
- Say it as /ˈluːnətɪk/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.