Is it ensure, insure, or assure?
1690s, hossen gossen, said to have been British soldiers' mangled Englishing of the Arabic cry they heard at Muharram processions in India, Ya Hasan! Ya Husayn! ("O Hassan! O Husain!"), mourning two grandsons of the Prophet who died fighting for the faith. Title of Yule & Burnell's 1886 glossary of Anglo-Indian words, and taken by linguists in naming the law of Hobson-Jobson, describing the effort to bring a new and strange word into harmony with the language.