ugly as sin

adj

"ugly-as-sin" is a 9-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
11
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Extremely ugly.

Corpus desk

Index EN-ugly-as-sin · ugly as sin · English

ugly as sin · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "U" 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 ugly as sin
PropertyValue
Headwordugly as sin
LanguageEnglish
Part of speechAdjective
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “ugly as sin” in English

ugly as sinfalls 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 as sin is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Extremely ugly.".

ugly as sin has no tracked misspelling variants, suggesting the orthography follows predictable English patterns. We don't track a confusable pairing for this entry, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

This entry carries no recorded etymology, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is ugly as sin, spelled U-G-L-Y- -A-S- -S-I-N.

Definition

  1. 1
    Extremely ugly.

Recorded use

Wiktionary examples

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

  1. It was easy enough to see that the child was a changeling, for it wasn't like other children at all it screamed and cried, as if a knife stuck in it, and it wheezed and hit about with its arms like a huldre-cat, and was as ugly as sin.
  2. 'She is a personality,' said M. Bouc. 'Ugly as sin, but she makes herself felt.'.

Synonyms

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 as sin"?
"ugly as sin" is spelled U-G-L-Y- -A-S- -S-I-N.
What does "ugly as sin" mean?
As an adjective, "ugly as sin" means: Extremely ugly.
What language does "ugly as sin" come from?
"ugly as sin" 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