Correct spelling for the English word "Emilly" is [ˈɛmɪlˌi], [ˈɛmɪlˌi], [ˈɛ_m_ɪ_l_ˌi] (IPA phonetic alphabet).
The name Emily is of Latin origin and is derived from the Latin name Aemilia. Aemilia itself is believed to come from the Latin word aemulus, meaning rival or emulating. Over time, the name evolved into Emilia in various languages and eventually turned into Emily in English. It became a popular name in the English-speaking world due to its use in literary works, such as the character Emily in Charlotte Brontë's novel Wuthering Heights.