nutcase

/ˈnʌtkeɪs/

//ˈnʌtkeɪs// noun

By · According to Wiktionary data (CC BY-SA) ·

"nutcase" is a 7-letter English headword indexed on PlainSpell.

The verdict

“nutcase” is uncommon English (frequency #55,619 among 1,534 “N” headwords), classed as a noun. The kind of spelling people second-guess.

#55,619
frequency rank, English
1,534
“N” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An eccentric or odd person.

Corpus desk

Index EN-nutcase · nutcase · English

nutcase · rank #55,619 · 0 variants · 0 confusables

  • FREQ-RARE #55,619
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 1,534
  • PHOTO-FINISH Novosibirsk

Nearest frequency peer: Novosibirsk (-1 rank slots)

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.

Long-tail ranks near “nutcase”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “nutcase” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for nutcase
PropertyValue
Headwordnutcase
LanguageEnglish
Part of speechNoun
IPA/ˈnʌtkeɪs/
Letters7
Frequency rank#55,619
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “nutcase” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).nutcasefalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “Novosibirsk” (#55,618), “objectified” (#55,620), “noni” (#55,617). Among 1,534 “N” headwords, “nutcase” is #55,619. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

nutcase is uncommon English at frequency #55,619 among 1,534 “N” headwords, classed as anoun, transcribed /ˈnʌtkeɪs/. Rarity is why readers land here mid-draft. 2 senses are on record.

Our edit-distance generator produced no likely misspellings for nutcase, typically a sign the spelling maps closely to how the word sounds. Our confusable-pair dataset has no match for it, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From nut + case. Compare headcase, mental case etc. The correct English form is nutcase, spelled N-U-T-C-A-S-E.

Definition

  1. 1
    An eccentric or odd person.
  2. 2
    Someone who is insane.

Etymology

From nut + case. Compare headcase, mental case etc.

Synonyms

freakkooknutbagnutterodd duckwackoweirdostrange personpsychocrackpotloonnutscrewballmad person

This word in other languages

schräger Vogel(Deutsch)

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

How do you spell "nutcase"?
"nutcase" is spelled N-U-T-C-A-S-E. The IPA pronunciation is /ˈnʌtkeɪs/.
What does "nutcase" mean?
As a noun, "nutcase" means: An eccentric or odd person.
How do you pronounce "nutcase"?
The IPA (International Phonetic Alphabet) transcription for "nutcase" is /ˈnʌtkeɪs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "nutcase"?
From nut + case. Compare headcase, mental case etc. See the full etymology section above for more details.
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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "nutcase", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

outgrew#55,626Nanette#55,611Mulcahy#55,605parquet#55,633

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

Source: FrequencyWords open word-frequency list