Proto-Esperanto (Esperanto: Pra-Esperanto) is the modern term for any of the stages in the evolution of L. L. Zamenhof's language project, prior to the...

Native Esperanto speakers (Esperanto: denaskuloj or denaskaj esperantistoj) are people who have acquired Esperanto as one of their native languages. As...

language in Dr. Esperanto's International Language (Esperanto: Unua Libro), which he published under the pseudonym Doktoro Esperanto. Early adopters of...

Esperanto is written in a Latin-script alphabet of twenty-eight letters, with upper and lower case. This is supplemented by punctuation marks and by various...

An Esperantist (Esperanto: esperantisto) is a person who speaks, reads or writes Esperanto. According to the Declaration of Boulogne, a document agreed...

Esperanto vocabulary and grammatical forms derive primarily from the Romance languages, with substantial contributions from Germanic languages. The language...

Esperanto symbols, primarily the Esperanto flag, have seen much consistency over the time of Esperanto's existence (namely in the consistent usage of the...

measures against the Esperanto community, having Esperanto speakers imprisoned and killed as part of the Great Purge. The Esperanto community was restored...

The original word base of Esperanto contained around 900 root words and was defined in Unua Libro ("First Book"), published by L. L. Zamenhof in 1887...

Zamenhof, the creator of Esperanto. The primary difference is the absence of palatalization, although this was present in Proto-Esperanto (nacjes, now nacioj...