birthday boy

noun

"birthday-boy" is a 11-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
12
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A man or boy whose birthday it is.

Corpus desk

Index EN-birthday-boy · birthday boy · English

birthday boy · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "B" 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 birthday boy
PropertyValue
Headwordbirthday boy
LanguageEnglish
Part of speechNoun
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “birthday boy” in English

birthday boyfalls 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

birthday boy is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A man or boy whose birthday it is.".

birthday boy has no tracked misspelling variants, a straightforward case of a spelling with little room for common typos. No close-neighbour confusable shows up for this headword in our dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

No documented word history exists for this headword, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is birthday boy, spelled B-I-R-T-H-D-A-Y- -B-O-Y.

Definition

  1. 1
    A man or boy whose birthday it is.

Recorded use

Wiktionary examples

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

  1. The party was to be from two to five o'clock, and Sunny Boy, in his best white flannel suit, and carrying Oliver's present under his arm, started about quarter of two for the birthday boy’s house.
  2. The birthday boy was a 65-year-old man who was half-asleep.

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 "birthday boy"?
"birthday boy" is spelled B-I-R-T-H-D-A-Y- -B-O-Y.
What does "birthday boy" mean?
As a noun, "birthday boy" means: A man or boy whose birthday it is.
What language does "birthday boy" come from?
"birthday boy" 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