principal

/ˈpɹɪn.sɪ.pəl/

//ˈpɹɪn.sɪ.pəl// adj

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

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

The verdict

“principal” is a regularly-used English word, ranked #2,907 in English word frequency and used as an adjective.

#2,907
frequency rank, English
9
letters
14
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Primary; most important; first level in importance.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

principal vs principle
78% similar
principal vs principally
82% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for principal
PropertyValue
Headwordprincipal
LanguageEnglish
Part of speechAdjective
IPA/ˈpɹɪn.sɪ.pəl/
Letters9
Frequency rank#2,907
Misspellings tracked14
Confusable pairs2
SourceWiktionary (kaikki.org)

Where “principal” sits in English frequency

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

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for principal is 9 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ˈpɹɪn.sɪ.pəl/. Corpus data places it at rank #2,907 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 14 likely wrong-spelling variants for principal, with forms such as "pirncipal", "pprincipal", and "pricnipal". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 2 confusable-pair relationships, "principle", "principally", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle English principal, from Old French principal, from Latin prīncipālis. The correct English form is principal, spelled P-R-I-N-C-I-P-A-L.

Definition

  1. 1
    Primary; most important; first level in importance.
  2. 2
    Of or relating to a prince; princely.
  3. 3
    Chosen or assumed among a branch of possible values of a multi-valued function so that the function is single-valued.

Etymology

From Middle English principal, from Old French principal, from Latin prīncipālis.

This word in other languages

principal(Español)principal(Français)hauptsächlich(Deutsch)principal(Português)

Common misspellings

Also misspelled as: pirncipal,pprincipal,pricnipal,princcipal,princiapl,principall,principla,princippal,princpial,prinicpal,prinncipal,prnicipal,prrincipal,rpincipal

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of principal - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

pirncipal2pprincipal1pricnipal2princcipal1princiapl2principall1principla2princippal1
Edit distance from "principal"

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 "principal"?
"principal" is spelled P-R-I-N-C-I-P-A-L. The IPA pronunciation is /ˈpɹɪn.sɪ.pəl/.
What does "principal" mean?
As an adjective, "principal" means: Primary; most important; first level in importance.
What words are commonly confused with "principal"?
"principal" is commonly confused with "principle", "principally". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "principal"?
The IPA (International Phonetic Alphabet) transcription for "principal" is /ˈpɹɪn.sɪ.pəl/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "principal"?
From Middle English principal, from Old French principal, from Latin prīncipālis. 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.

Using “principal”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is P-R-I-N-C-I-P-A-L - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈpɹɪn.sɪ.pəl/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “principle” - see the side-by-side comparison. principal vs principle
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list