Proper noun
Esti
A nickname for Esther or Ester
Copulas are words such as esti 'be', iĝi 'become', resti 'remain', and ŝajni 'seem', for which neither noun phrase takes the accusative case. Source: Internet
However, the reverse is not true, as this does not change the inherent part of speech: Morti (to die) does not have the same meaning as esti morta (to be dead). Source: Internet
Fully adjustable vertical equipment rails to support mounting technologies 19 inch (EIA 310) and 23 inch, and ESTI. Source: Internet
Moreover, she’s surprised to see two friends from her youth have married: Dovid (Alessandro Nivola) and Esti (Rachel McAdams). Source: Internet
Therefore, unlike the situation with other verbs, word order with esti can be semantically important: compare hundoj estas personoj (dogs are people) and personoj estas hundoj (people are dogs). Source: Internet
The infinitive is esti, and the whole conjugation is regular (like all other Esperanto verbs). Source: Internet