fehlerfreien

Fehlerfreien is the attributive inflected form of the German adjective fehlerfrei, meaning free of errors or defect-free. It is used when the adjective directly modifies a noun and carries inflection for gender, number, and case. The form -en appears in several common patterns, notably after definite articles in plural and in many dative cases, and in strong declension in the plural without an article.

Examples:

- Die fehlerfreien Ergebnisse wurden veröffentlicht. (nominative plural with definite article)

- Mit den fehlerfreien Daten konnte die Studie repliziert werden. (dative plural)

- mit der fehlerfreien Prüfung. (feminine singular dative)

- Die fehlerfreien Modelle wurden vorgestellt. (nominative plural)

Predicative use:

When fehlerfrei is used predicatively with sein, the adjective typically remains in the base form fehlerfrei, as in Die Ergebnisse sind fehlerfrei. The -en ending occurs only in attributive position.

Etymology and usage:

The term derives from fehler (fault) + frei (free). It is common in quality assurance, engineering, data quality, software testing, and manufacturing to describe products, processes, or data that contain no detected defects. The phrase is often contrasted with fehlerhaft (faulty) or fehlerbehaftet (defective).