mailroom

noun

By · According to Wiktionary data (CC BY-SA) ·

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

The verdict

“mailroom” is uncommon English (frequency #78,803 among 4,057 “M” headwords), classed as a noun. The kind of spelling people second-guess.

#78,803
frequency rank, English
4,057
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A room used for receiving and (usually) sending mail.

Corpus desk

Index EN-mailroom · mailroom · English

mailroom · rank #78,803 · 0 variants · 0 confusables

  • FREQ-RARE #78,803
  • LEN-LONG 8 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 4,057
  • PHOTO-FINISH Mahajan

Nearest frequency peer: Mahajan (-2 rank slots)

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.

Long-tail ranks near “mailroom”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “mailroom” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for mailroom
PropertyValue
Headwordmailroom
LanguageEnglish
Part of speechNoun
Letters8
Frequency rank#78,803
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “mailroom” in English

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

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “Mahajan” (#78,801), “Malam” (#78,805), “macula” (#78,799). Among 4,057 “M” headwords, “mailroom” is #78,803. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

mailroom is uncommon English at frequency #78,803 among 4,057 “M” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A room used for receiving and (usually) sending mail.".

No misspelling variants are generated for mailroom in our index, since its letter sequence doesn't invite the usual edit-distance slips. We don't track a confusable pairing for this entry, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From mail + room. The correct English form is mailroom, spelled M-A-I-L-R-O-O-M.

Definition

  1. 1
    A room used for receiving and (usually) sending mail.

Recorded use

Wiktionary example

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

  1. Oh, Pete. This is not the gym. — That’s right, Anna. This is the mailroom.

Etymology

From mail + room.

Synonyms

porter's lodge

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 "mailroom"?
"mailroom" is spelled M-A-I-L-R-O-O-M.
What does "mailroom" mean?
As a noun, "mailroom" means: A room used for receiving and (usually) sending mail.
What is the origin of the word "mailroom"?
From mail + room. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "mailroom", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

massless#78,809locative#78,788Lipinski#78,786nanotech#78,854

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

Source: FrequencyWords open word-frequency list