The 'soft sign' (Ь, ь) is a symbol in the
Cyrillic alphabet. In the
Old Slavonic language, it represented a short [i]-like vowel; but in modern Slavonic Cyrillic writing systems (all East-Slavic plus
Bulgarian and
Church Slavonic), it does not represent an individual sound but just indicates softening (
palatalization) of the preceding
consonant—or just has a traditional orthographical usage with no phonetical meaning (like Russian ''туш'' ‘flourish after a toast’ and ''тушь'' ‘india ink’, both pronounced , but different in
grammatical gender and
declension). Also, it has a function of "separation sign": in Russian, vowels after the soft sign are pronounced separately from the previous consonant and are yotified (compare Russian ''льют'' '(they) pour/cast' and ''лют'' '(he is) fierce'). That is, the soft sign is functionally rather a modifier of the neighboring letters than a real letter itself.
Among Slavonic languages, soft sign has the most limited use in
Bulgarian: since 1945, the only possible position is one between consonants and 'o' (for example, in names ''Жельо, Кръстьо, Гьончо'' etc.).
Cyrillic variant of the
Serbian alphabet (Vukovica) has no soft sign since mid-19th century: palatalization is represented by special consonant letters instead of this sign (some of these letters, like
Њ or
Љ, were designed as ligatures with the soft sign). Modern
Macedonian writing system created in 1944 after Serbian origin had no soft sign from the very beginning.
No words start with it, and under normal orthographic rules it has no uppercase form. However, Cyrillic type fonts do normally provide an uppercase form for setting type in
all caps, or for using it as element of various serial numbers (like series of Soviet banknotes) and indices (for example, there existed model of old Russian
steam locomotives
marked "Ь").
In the
romanization of Cyrillic words, soft signs are typically replaced with
apostrophes or just ignored (especially in the final position: Тверь=
Tver, Обь=
Ob etc.).
Name of the letter
★
Old Slavonic: ''ѥрь'' (yerĭ)—meaning of the word is unknown
★
Church Slavonic: ''єрь'' (yer’)
★
Bulgarian: ''ер малък'' (="small yer"), whereas the
hard sign is named ''ер голям'' (="big yer")
★
Russian: ''мягкий знак'' (="soft sign"), or (an archaic, mostly pre-1917 name) ''ерь''
★
Ukrainian: ''м’який знак'' (="soft sign")
★
Belarusian: ''мяккі знак'' (="soft sign")
★
Serbocroatian (and its descendants): ''tanko jer/танко јер'' (="thin yer"), or simply ''jer/јер'' (yer)—whereas the
hard sign is named ''debelo jer/дебело јер'' (="thick yer") or simply ''jor/јор'' (yor)
See also
★ Ъ (
yer or
hard sign)
★
iotation
★ Ы (
yery), Љ (
lje) and Њ (
nje)—ligatures with soft sign
★ Ҍ (
semisoft sign), graphically identical to Ѣ (
Yat)