ugly duckling

/ˈʌɡ.liː ˌdʌk.lɪŋ/

//ˈʌɡ.liː ˌdʌk.lɪŋ// noun

"ugly-duckling" is a 12-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
13
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A young person who is ugly, but who is expected to become beautiful or handsome as they mature.

Key facts for ugly duckling
PropertyValue
Headwordugly duckling
LanguageEnglish
Part of speechNoun
IPA/ˈʌɡ.liː ˌdʌk.lɪŋ/
Letters13
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “ugly duckling” sits in English frequency

ugly duckling falls 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

ugly duckling is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈʌɡ.liː ˌdʌk.lɪŋ/. Rarity is why readers land here mid-draft. 2 senses are on record.

We couldn't generate a plausible misspelling set for ugly duckling, typically a sign the spelling maps closely to how the word sounds. Our confusable-pair dataset has no match for it, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: Calque of Danish grim ælling. From the fairy tale of a duckling, considered ugly, that matures into a magnificent swan. The correct English form is ugly duckling, spelled U-G-L-Y- -D-U-C-K-L-I-N-G.

Definition

  1. 1
    A young person who is ugly, but who is expected to become beautiful or handsome as they mature.
  2. 2
    Used other than figuratively or idiomatically: see ugly, duckling.

Etymology

Calque of Danish grim ælling. From the fairy tale of a duckling, considered ugly, that matures into a magnificent swan.

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 "ugly duckling"?
"ugly duckling" is spelled U-G-L-Y- -D-U-C-K-L-I-N-G. The IPA pronunciation is /ˈʌɡ.liː ˌdʌk.lɪŋ/.
What does "ugly duckling" mean?
As a noun, "ugly duckling" means: A young person who is ugly, but who is expected to become beautiful or handsome as they mature.
How do you pronounce "ugly duckling"?
The IPA (International Phonetic Alphabet) transcription for "ugly duckling" is /ˈʌɡ.liː ˌdʌk.lɪŋ/. 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 "ugly duckling"?
Calque of Danish grim ælling. From the fairy tale of a duckling, considered ugly, that matures into a magnificent swan. 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 “ugly duckling”

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

  • The one correct English spelling is U-G-L-Y- -D-U-C-K-L-I-N-G - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈʌɡ.liː ˌdʌk.lɪŋ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • 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