be, essere, être, sein, būt
The so-called basic copular verb (to be in English) is not used in all european languages and not even in all languages of the European Union to the same extent. However it is a useful tool to prevent ambiguities.
All germanic and romance languages have at one point incorporated a form of Latin ēssere into their vocubularies, usually est. It is thus the most common word for to be, poses no problems in pronounciattion to any speaker of europe's languages and should thus form the base of the Europan word.
Conforming to the established rules on the form of verbs in Europan the europan word shal be este. From this, the root-noun est (existence) can be derived.
Like all europan words it is not to be conjugated, thus este translates all present tense forms of to be, namely am, is, and are