window sill

/ˈwɪndəʊ ˌsɪl/

//ˈwɪndəʊ ˌsɪl// noun

"window-sill" is a 10-letter English headword indexed on PlainSpell.

The verdict

“window sill” is uncommon English (outside the top frequency list), classed as a noun. 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) - Alternative spelling of windowsill.

Corpus desk

Index EN-window-sill · window sill · English

window sill · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "W" 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 window sill
PropertyValue
Headwordwindow sill
LanguageEnglish
Part of speechNoun
IPA/ˈwɪndəʊ ˌsɪl/
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “window sill” in English

window sillfalls 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

window sill is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈwɪndəʊ ˌsɪl/. Rarity is why readers land here mid-draft. Gloss: "Alternative spelling of windowsill.".

No generated misspelling entries exist for window sill in our index, a sign its spelling follows regular English conventions. No confusable counterpart is on file for this word, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

This headword's origin isn't recorded in our source data, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is window sill, spelled W-I-N-D-O-W- -S-I-L-L.

Definition

  1. 1
    Alternative spelling of windowsill.

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 "window sill"?
"window sill" is spelled W-I-N-D-O-W- -S-I-L-L. The IPA pronunciation is /ˈwɪndəʊ ˌsɪl/.
What does "window sill" mean?
As a noun, "window sill" means: Alternative spelling of windowsill.
How do you pronounce "window sill"?
The IPA (International Phonetic Alphabet) transcription for "window sill" is /ˈwɪndəʊ ˌsɪl/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "window sill" come from?
"window sill" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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