killjoy

/ˈkɪlˌd͡ʒɔɪ/

//ˈkɪlˌd͡ʒɔɪ// noun

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

The verdict

“killjoy” is uncommon English (frequency #70,001 among 1,236 “K” headwords), classed as a noun. The kind of spelling people second-guess.

#70,001
frequency rank, English
1,236
“K” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A person who is anti-fun, or prevents others from having fun.

Corpus desk

Index EN-killjoy · killjoy · English

killjoy · rank #70,001 · 0 variants · 0 confusables

  • FREQ-RARE #70,001
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 1,236
  • PHOTO-FINISH kina

Nearest frequency peer: kina (+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 “killjoy”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for killjoy
PropertyValue
Headwordkilljoy
LanguageEnglish
Part of speechNoun
IPA/ˈkɪlˌd͡ʒɔɪ/
Letters7
Frequency rank#70,001
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “killjoy” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).killjoyfalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “kina” (#70,002), “Khashoggi” (#69,999), “keystroke” (#69,998). Among 1,236 “K” headwords, “killjoy” is #70,001. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

killjoy is uncommon English at frequency #70,001 among 1,236 “K” headwords, classed as anoun, transcribed /ˈkɪlˌd͡ʒɔɪ/. Rarity is why readers land here mid-draft. Gloss: "A person who is anti-fun, or prevents others from having fun.".

killjoy doesn't appear in our generated misspelling index, and the word's spelling is regular enough that our generator found nothing worth flagging. It is not paired with a close-neighbour confusable in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From kill + joy, first attested in 1776. The correct English form is killjoy, spelled K-I-L-L-J-O-Y.

Definition

  1. 1
    A person who is anti-fun, or prevents others from having fun.

Recorded use

Wiktionary examples

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

  1. “If you mean me, sir, I call you and every one else to the inspection of my professional life. As to Christian or unchristian, I repudiate your canting palavering Christianity; and as to the way in which I spend my income, it is not my principle to maintain thieves and cheat offspring of their due inheritance in order to support religion and set myself up…
  2. What kill-joy have we here? […] I feel it in my bones some rascal is come to Galing, one that bringeth ill hap in his pocket and a shadow athwart the sun on this our day of festival.

Etymology

From kill + joy, first attested in 1776.

Synonyms

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 "killjoy"?
"killjoy" is spelled K-I-L-L-J-O-Y. The IPA pronunciation is /ˈkɪlˌd͡ʒɔɪ/.
What does "killjoy" mean?
As a noun, "killjoy" means: A person who is anti-fun, or prevents others from having fun.
How do you pronounce "killjoy"?
The IPA (International Phonetic Alphabet) transcription for "killjoy" is /ˈkɪlˌd͡ʒɔɪ/. 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 "killjoy"?
From kill + joy, first attested in 1776. 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 "killjoy", not the corpus desk frequency band.

Same letter count

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

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

Source: FrequencyWords open word-frequency list