moonbase

noun

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

The verdict

“moonbase” is uncommon English (frequency #92,892 among 36,575 “M” headwords), classed as a noun. The kind of spelling people second-guess.

#92,892
frequency rank, English
36,575
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A base or outpost located on a moon.

Key facts for moonbase
PropertyValue
Headwordmoonbase
LanguageEnglish
Part of speechNoun
Letters8
Frequency rank#92,892
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “moonbase” sits in English frequency

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

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

moonbase is uncommon English at frequency #92,892 among 36,575 “M” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A base or outpost located on a moon.".

We couldn't generate a plausible misspelling set for moonbase, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: Compound of moon + base. The correct English form is moonbase, spelled M-O-O-N-B-A-S-E.

Definition

  1. 1
    A base or outpost located on a moon.

Etymology

Compound of moon + base.

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 "moonbase"?
"moonbase" is spelled M-O-O-N-B-A-S-E.
What does "moonbase" mean?
As a noun, "moonbase" means: A base or outpost located on a moon.
What is the origin of the word "moonbase"?
Compound of moon + base. 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.

Using “moonbase”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is M-O-O-N-B-A-S-E - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list