main thing

noun

"main-thing" is a 9-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The most important factor; the principle consideration.

Corpus desk

Index EN-main-thing · main thing · English

main thing · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 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 main thing
PropertyValue
Headwordmain thing
LanguageEnglish
Part of speechNoun
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “main thing” in English

main thingsits 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

main thing is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The most important factor; the principle consideration.".

No misspelling variants are generated for main thing in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. Our confusable-pair dataset has no match for it, which typically means the spelling is too distinctive to be mistaken for another word.

This entry carries no recorded etymology, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is main thing, spelled M-A-I-N- -T-H-I-N-G.

Definition

  1. 1
    The most important factor; the principle consideration.

Recorded use

Wiktionary example

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

  1. ‘This country just exists in perpetual conflict’. Yeah, they love that shit, man! Fascists live for perpetual war! They love that! That’s their main thing! They love forever war! What is a fascist without war?

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 "main thing"?
"main thing" is spelled M-A-I-N- -T-H-I-N-G.
What does "main thing" mean?
As a noun, "main thing" means: The most important factor; the principle consideration.
What language does "main thing" come from?
"main thing" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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