first of all

adv

"first-of-all" is a 10-letter English headword indexed on PlainSpell.

The verdict

“first of all” is uncommon English (outside the top frequency list), classed as an adverb. 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) - Firstly; before anything else.

Corpus desk

Index EN-first-of-all · first of all · English

first of all · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "F" 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 first of all
PropertyValue
Headwordfirst of all
LanguageEnglish
Part of speechAdverb
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “first of all” in English

first of allsits 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

first of all is uncommon English outside the top frequency list, classed as anadverb. Rarity is why readers land here mid-draft. Gloss: "Firstly; before anything else.".

No generated misspelling entries exist for first of all in our index, since its letter pattern doesn't lend itself to common typo substitutions. This entry stands alone in our confusable 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, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is first of all, spelled F-I-R-S-T- -O-F- -A-L-L.

Definition

  1. 1
    Firstly; before anything else.

Recorded use

Wiktionary examples

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

  1. Be strong, live happie, and love, but first of all / Him whom to love is to obey, and keep / His great command; […]
  2. "My dear sir," said Hube in an authoritative manner to the receptionist askancing Thales, "first of all, we aren't tourists. Secondly, this isn't a rat, this is the present embodiment of the spiritual leader of millions of people in India […]

Synonyms

firstfirstlyfirst up

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 "first of all"?
"first of all" is spelled F-I-R-S-T- -O-F- -A-L-L.
What does "first of all" mean?
As an adverb, "first of all" means: Firstly; before anything else.
What language does "first of all" come from?
"first of all" 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