Es (С с; italics: С с) is a letter of the Cyrillic script.

Quick Facts Cyrillic letter Es, Phonetic usage: ...

Cyrillic letter Es
Phonetic usage:	[s]
Name (Early Cyrillic alphabet):	слово
Numeric value:	200
Derived from:	Lunate form of Greek letter Sigma (Ϲ ϲ)
The Cyrillic script
Slavic letters
А А̀ А̂ А̄ Ӓ Б В Г Ґ Д Ђ Ѓ Е Ѐ Е̄ Е̂ Ё Є Ж З З́ Ѕ И І Ї Ꙇ Ѝ И̂ Ӣ Й Ј К Л Љ М Н Њ О О̀ О̂ Ō Ӧ П Р С С́ Т Ћ Ќ У У̀ У̂ Ӯ Ў Ӱ Ф Х Ц Ч Џ Ш Щ Ꙏ Ъ Ъ̀ Ы Ь Ѣ Э Ю Ю̀ Я Я̀
Non-Slavic letters
Ӑ А̊ А̃ Ӓ̄ Ӕ Ә Ә́ Ә̃ Ӛ В̌ Ԝ Г̑ Г̇ Г̣ Г̌ Г̂ Г̆ Г̈ Ҕ Ғ Ӻ Ғ̌ Ӷ Д́ Д̌ Д̈ Д̣ Д̆ Ӗ Е̃ Ё̄ Є̈ Ԑ Ԑ̈ Җ Ӝ Ӂ Ж̣ Ҙ Ӟ З̌ З̣ З̆ Ӡ И̃ Ӥ Ҋ Қ Ӄ Ҡ Ҟ Ҝ К̣ Ԛ ᴫ Л́ Ӆ Ԯ Ԓ Л̈ Ӎ ᵸ Н́ Ӊ Ң Ԩ Ӈ Ҥ О̆ О̃ Ӧ̄ Ө Ө̄ Ө́ Ө̆ Ӫ Ԥ П̈ Ҏ Р̌ С̌ Ҫ С̣ С̱ Т́ Т̈ Т̌ Т̇ Т̣ Ҭ У̃ Ӳ У̊ Ӱ̄ Ұ Ү Ү́ Х̣ Х̱ Х̮ Х̑ Х̌ Ҳ Ӽ Ӿ Һ Һ̈ Ԧ Ц̌ Ц̈ Ҵ Ҷ Ҷ̣ Ӵ Ӌ Ҹ Ч̇ Ч̣ Ҽ Ҿ Ш̈ Ш̣ ꚜ Ы̆ Ы̄ Ӹ ꚝ Ҍ Ҩ Э̆ Э̄ Э̇ Ӭ Ӭ́ Ӭ̄ Ю̆ Ю̈ Ю̄ Я̆ Я̄ Я̈ Ӏ ʼ ˮ
Archaic or unused letters
А̨ Б̀ Б̣ Б̱ В̀ Г̀ Г̧ Г̄ Г̓ Г̆ Ҕ̀ Ҕ̆ Ԁ Д̓ Д̀ Д̨ Ԃ Ꚁ Ꙣ Е̇ Е̨ Ж̀ Ж̑ Ꙃ Ꙅ Џ̆ Ꚅ Ꚅ̆ Ꙁ З̀ З̑ Ԅ Ԇ Ꚉ Ԫ Ꚃ Ꚕ І̂ І̣ І̨ Ј̵ Ј̃ Ꙉ К̓ К̀ К̆ Ӄ̆ К̑ К̇ К̈ К̄ Ԟ К̂ Л̀ Ԡ Ꙥ Ԉ Л̑ Л̇ Ԕ М̀ М̃ Ꙧ Н̀ Н̄ Н̧ Н̃ Ԋ Ԣ Н̡ Ѻ Ꙩ Ꙫ Ꙭ ꙮ Ꚙ Ꚛ П̓ П̀ П́ Ҧ П̧ П̑ Ҁ Ԛ̆ Р́ Р̀ Р̃ Ԗ С̀ С̈ Ԍ Ҫ̓ Т̓ Т̀ Ԏ Т̑ Ꚋ Т̧ Ꚍ Ꚍ̆ ОУ Ꙋ У̇ У̨ ꙋ́ Ф̑ Ф̓ Х́ Х̀ Х̆ Х̇ Х̧ Х̾ Х̓ һ̱ Ѡ Ꙍ Ѽ Ѿ Ꙡ Ц̀ Ц́ Ц̓ Ꚏ Ꚏ̆ Ꚑ Ч́ Ч̀ Ч̆ Ч̑ Ч̓ Ԭ Ꚓ Ꚇ Ꚇ̆ Ҽ̆ Ш̀ Ш̆ Ш̑ Щ̆ Ꚗ Ꚗ̆ Ъ̄ Ъ̈ Ъ̈̄ Ꙑ Ы̂ Ы̃ Ѣ́ Ѣ̈ Ѣ̆ Ꙓ Э̨ Э̂ Ꙕ Ю̂ Ꙗ Я̈ Я̂ Я̨ Ԙ Ѥ Ѧ Ꙙ Ѫ Ꙛ Ѩ Ꙝ Ѭ Ѯ Ѱ Ѳ Ѵ Ѷ Ꙟ
List of Cyrillic letters List of Cyrillic multigraphs
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It commonly represents the voiceless alveolar fricative /s/, like the pronunciation of ⟨s⟩ in "sand".

The Cyrillic letter Es is derived from a variant of the Greek letter Sigma known as lunate sigma (Ϲ ϲ), in use in the Greek-speaking world in early medieval times. It has no connection to the Latin letter C (C c), which is a descendant of the Greek letter Gamma (Γ γ); however, many languages (for different reasons) apply the value of /s/ to the Latin letter C, especially before front vowels e and i (examples being English, French, Portuguese, Latin American Spanish); see hard and soft C. As its name suggests, Es is related to the Latin S.

The name of Es in the Early Cyrillic alphabet was слово (slovo), meaning "word" or "speech".^[1]

In the Cyrillic numeral system, Es had a value of 200.

In the modern Latinized Cyrillic fonts in use today, the Cyrillic letter Es looks exactly like the Latin letter C, being one of six letters in the Cyrillic alphabet that share appearances with Latin alphabet letters but are pronounced differently (or at least differently from the most common pronunciation). This fact has been frequently abused by plagiarism detector circumventors.

As used in the alphabets of various languages, Es represents the following sounds:

• voiceless alveolar fricative /s/, like the pronunciation of ⟨s⟩ in "sand"
• palatalized voiceless alveolar fricative /sʲ/

The pronunciations shown in the table are the primary ones for each language; for details consult the articles on the languages.

• Σ σ/ς : Greek letter Sigma
• S s : Latin letter S
• Ѕ ѕ : Cyrillic letter Ѕ
• C c : Latin letter C

• The dictionary definition of С at Wiktionary
• The dictionary definition of с at Wiktionary