cilly
noun
cilly is spelled C-I-L-L-Y: 5 letters. It appears about once in every 60 million words in written English, the 243,301st most frequent word form (wordfreq, 2021 data). As a noun, cilly means “Any predictable facet of the Enigma Machine cipher due to operator error or laziness” (English Wiktionary, September 2026). The plural of cilly is cillies.
How many letters and syllables are in cilly?
| Letters | 5: C-I-L-L-Y |
|---|---|
| In writing | about once in every 60 million words; the 243,301st most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is cilly?
Cilly appears about once in every 60 million words in written English, the 243,301st most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Forms of cilly
- cillies plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does cilly mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Any predictable facet of the Enigma Machine cipher due to operator error or laziness.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does cilly come from?
Uncertain; possibly a pun on silly and the letters CIL used as a cryptographic key.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).