cyclothymia

noun

"cyclothymia" is a 11-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
11
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A chronic mental disturbance characterized by mood swings and depression.

Corpus desk

Index EN-cyclothymia · cyclothymia · English

cyclothymia · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "C" 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 cyclothymia
PropertyValue
Headwordcyclothymia
LanguageEnglish
Part of speechNoun
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “cyclothymia” in English

cyclothymiasits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

cyclothymia is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A chronic mental disturbance characterized by mood swings and depression.".

We couldn't generate a plausible misspelling set for cyclothymia, typically a sign the spelling maps closely to how the word sounds. No close-neighbour confusable shows up for this headword in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: Internationalism. By surface analysis, cyclo- + -thymia. The correct English form is cyclothymia, spelled C-Y-C-L-O-T-H-Y-M-I-A.

Definition

  1. 1
    A chronic mental disturbance characterized by mood swings and depression.

Recorded use

Wiktionary example

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

  1. A study using the BAR assessment tool criteria found that cyclothymia had the best overall clinical utility for case finding and screening when focusing on depressed youths with an early transition to bipolar.

Etymology

Internationalism. By surface analysis, cyclo- + -thymia.

This word in other languages

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 "cyclothymia"?
"cyclothymia" is spelled C-Y-C-L-O-T-H-Y-M-I-A.
What does "cyclothymia" mean?
As a noun, "cyclothymia" means: A chronic mental disturbance characterized by mood swings and depression.
What is the origin of the word "cyclothymia"?
Internationalism. By surface analysis, cyclo- + -thymia. 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.

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

Source: FrequencyWords open word-frequency list