ß

Frae Wikipedia

The ßGerman Eszett (IPA /ɛsˈtsɛt/) or scharfes S (shairp S) gin spelt oot — is a letter uised in the German alphabet juist. It alternates wi ss unner certaint condeetions, an it is replaced bi ss whan thare's nae ß tae uise. ß is naur-haund unique amang the letters o the Laitin alphabet in that it haes nae dooble letter form syne it ne'er occurs initially (ane o the feow ither exemplars is kra, uised in Greenlandic). Sae German "Fußball" whan scrieven in Dooble Letters is "FUSSBALL".

ß wis uised as an orthographic variant o s in aulder forms o Scots writin an aa, for examplar discloiß, meanin "disclose", in John Knox's Address to the Congregatioun.