common room

noun

"common-room" is a 10-letter English headword indexed on PlainSpell.

The verdict

“common room” 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 shared lounge found in dormitories, universities, military bases, etc.

Corpus desk

Index EN-common-room · common room · English

common room · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-4 4 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 common room
PropertyValue
Headwordcommon room
LanguageEnglish
Part of speechNoun
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “common room” in English

common roomfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

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

Rare enough to double-check

common room is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A shared lounge found in dormitories, universities, military bases, etc.".

The misspelling generator found no plausible variants for common room, a straightforward case of a spelling with little room for common typos. No close-neighbour confusable shows up for this headword in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

This headword's origin isn't recorded in our source data, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is common room, spelled C-O-M-M-O-N- -R-O-O-M.

Definition

  1. 1
    A shared lounge found in dormitories, universities, military bases, etc.

Recorded use

Wiktionary examples

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

  1. He was […] none of your free-and-easy companions, who would scrape their boots upon the fire-dogs in the common room, and be not at all particular on the subject of spittoons; […]
  2. Any expected permanent way checks are indicated daily on a map in the enginemen's common room.

Synonyms

combination roomdayroom

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 "common room"?
"common room" is spelled C-O-M-M-O-N- -R-O-O-M.
What does "common room" mean?
As a noun, "common room" means: A shared lounge found in dormitories, universities, military bases, etc.
What language does "common room" come from?
"common room" is a English word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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