moonsick

adj

"moonsick" is a 8-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Insane or emotionally deranged, either temporarily or permanently.

Corpus desk

Index EN-moonsick · moonsick · English

moonsick · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-3 3 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 moonsick
PropertyValue
Headwordmoonsick
LanguageEnglish
Part of speechAdjective
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “moonsick” in English

moonsicksits 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

moonsick is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.

Our edit-distance generator produced no likely misspellings for moonsick, a sign its spelling follows regular English conventions. We don't track a confusable pairing for this entry, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From moon + sick. The correct English form is moonsick, spelled M-O-O-N-S-I-C-K.

Definition

  1. 1
    Insane or emotionally deranged, either temporarily or permanently.
  2. 2
    Affected by or exhibiting an unusual or dreamy sentimentality.

Etymology

From moon + sick.

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 "moonsick"?
"moonsick" is spelled M-O-O-N-S-I-C-K.
What does "moonsick" mean?
As an adjective, "moonsick" means: Insane or emotionally deranged, either temporarily or permanently.
What is the origin of the word "moonsick"?
From moon + sick. 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