to be too; to be excessively [adjective]This is a grammatical pattern consisting of a form of sein followed by zu + an adjective, e.g. ist zu kalt (“is too cold”). In normal finite sentences, the words are usually inflected, so the exact infinitive form sein zu does not normally appear as a continuous phrase in ordinary usage.
GE: Die Kombination „sein zu“ wird verwendet, um auszudrücken, dass etwas ein bestimmtes Maß überschreitet.
EN: The combination “sein zu” is used to express that something exceeds a certain degree.