butterfly

/ˈbʌ.tə(ɹ).flaɪ/

//ˈbʌ.tə(ɹ).flaɪ// noun

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

The verdict

“butterfly” is a regularly-used English word, ranked #7,891 in English word frequency and used as a noun.

#7,891
frequency rank, English
9
letters
13
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A flying insect of the order Lepidoptera, distinguished from moths by their diurnal activity and generally brighter colouring.

Visual similarity to commonly confused words

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

butterfly vs buttery
78% similar
butterfly vs bitterly
78% similar

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

Key facts for butterfly
PropertyValue
Headwordbutterfly
LanguageEnglish
Part of speechNoun
IPA/ˈbʌ.tə(ɹ).flaɪ/
Letters9
Frequency rank#7,891
Misspellings tracked13
Confusable pairs2
SourceWiktionary (kaikki.org)

Where “butterfly” 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). butterfly 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 butterfly is 9 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈbʌ.tə(ɹ).flaɪ/. Corpus data places it at rank #7,891 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 12 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 13 likely wrong-spelling variants for butterfly, with forms such as "bbutterfly", "btuterfly", and "buterfly". 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, "buttery", "bitterly", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle English buterflie, butturflye, boterflye, from Old English buterflēoge, equivalent to butter + fly. Cognate with Dutch botervlieg, German Butterfliege (“butterfly”). The name may have originally been applied to butterflies of a yellowish color, … The correct English form is butterfly, spelled B-U-T-T-E-R-F-L-Y.

Definition

  1. 1
    A flying insect of the order Lepidoptera, distinguished from moths by their diurnal activity and generally brighter colouring.
  2. 2
    A use of surgical tape, cut into thin strips and placed across an open wound to hold it closed.
  3. 3
    The butterfly stroke.
  4. 4
    Any of several plane curves that look like a butterfly; see Butterfly curve (transcendental) and Butterfly curve (algebraic).
  5. 5
    Ellipsis of butterflies in one’s stomach (“A sensation of excited anxiety felt in the stomach”).
  6. 6
    Someone seen as being unserious and (originally) dressed gaudily; someone flighty and unreliable.
  7. 7
    A combination of four options of the same type at three strike prices giving limited profit and limited risk.
  8. 8
    A random change in an aspect of the timeline seemingly unrelated to the primary point of divergence, resulting from the butterfly effect.
  9. 9
    A type of stretch in which one sits on the ground with the legs folded into a shape like that of a butterfly's wings, slightly rocking them up and down, resembling the wings fluttering.
  10. 10
    A person who changes partners frequently.
  11. 11
    A safety link or detaching hook above the cage attached to the winding rope to prevent the cage from being overwound.
  12. 12
    party switcher; turncoat.

Etymology

From Middle English buterflie, butturflye, boterflye, from Old English buterflēoge, equivalent to butter + fly. Cognate with Dutch botervlieg, German Butterfliege (“butterfly”). The name may have originally been applied to butterflies of a yellowish color, or reflected a belief that butterflies ate milk and butter (compare German Molkendieb (“butterfly”, literally “whey-thief”) and Low German Botterlicker (“butterfly”, literally “butter-licker”)), or that they excreted a butter-like substance (compare Dutch boterschijte (“butterfly”, literally “butter-excretor”)). Compare also German Schmetterling from Schmetten (“cream”), German Low German Bottervögel (“butterfly”, literally “butter-fowl”). More at butter, fly. An alternate theory suggests that the first element may have originally been Old English butor- (“beater”), a mutation of bēatan (“to beat”), but this would not explain the cognates in other languages or the other names formed with milk products. Superseded non-native Middle English papilion (“butterfly”) borrowed from Old French papillon (“butterfly”).

This word in other languages

Common misspellings

Also misspelled as: bbutterfly,btuterfly,buterfly,butetrfly,buttefrly,butterffly,butterflly,butterflyy,butterfyl,butterlfy,butterrfly,buttrefly,ubtterfly

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of butterfly - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

bbutterfly1btuterfly2buterfly1butetrfly2buttefrly2butterffly1butterflly1butterflyy1
Edit distance from "butterfly"

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 "butterfly"?
"butterfly" is spelled B-U-T-T-E-R-F-L-Y. The IPA pronunciation is /ˈbʌ.tə(ɹ).flaɪ/.
What does "butterfly" mean?
As a noun, "butterfly" means: A flying insect of the order Lepidoptera, distinguished from moths by their diurnal activity and generally brighter colouring.
What words are commonly confused with "butterfly"?
"butterfly" is commonly confused with "buttery", "bitterly". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "butterfly"?
The IPA (International Phonetic Alphabet) transcription for "butterfly" is /ˈbʌ.tə(ɹ).flaɪ/. 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 "butterfly"?
From Middle English buterflie, butturflye, boterflye, from Old English buterflēoge, equivalent to butter + fly. Cognate with Dutch botervlieg, German Butterfliege (“butterfly”). The name may have originally been applied to butterflies of a yellowi... 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 “butterfly”

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

  • The one correct English spelling is B-U-T-T-E-R-F-L-Y - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈbʌ.tə(ɹ).flaɪ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “buttery” - see the side-by-side comparison. butterfly vs buttery
  • 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