insufficient
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insufficient
Not enough in quantity, quality, or degree; not meeting the requirements or needs.
Die bereitgestellten Informationen waren für eine endgültige Entscheidung unzureichend.
The information provided was insufficient for a final decision.
The word consists of the negation 'un-' and the adjective 'zureichend' (sufficient). It therefore literally means 'not sufficient' or 'not enough'.
Seine Deutschkenntnisse waren für die Stelle leider unzureichend.
Unfortunately, his German skills were insufficient for the position.
To express what something is not sufficient for, 'unzureichend' (insufficient) is very often combined with the preposition 'für' (for) and the accusative.
Die Zeit war unzureichend für eine gründliche Diskussion.
The time was insufficient for a thorough discussion.
'Unzureichend' (insufficient) belongs more to formal written language and is often used in official reports, evaluations, or academic texts.
Die Sicherheitsvorkehrungen wurden als unzureichend bewertet.
The safety precautions were assessed as insufficient.
Common nouns described with 'unzureichend' (insufficient) are: unzureichende Mittel (insufficient funds/resources), unzureichende Kenntnisse (insufficient knowledge), unzureichende Daten (insufficient data), or eine unzureichende Begründung (an insufficient justification).
Die Studie basiert auf unzureichenden Daten und ist daher nicht aussagekräftig.
The study is based on insufficient data and is therefore not meaningful.
lacking
Mangelnd and unzureichend can both express that something is not enough. Mangelnd tends to emphasize that something necessary is missing or that too little is available. Unzureichend focuses more on the fact that the existing result does not meet a requirement.
Die vorhandenen Belege waren für eine klare Bewertung unzureichend.
The available evidence was insufficient for a clear assessment.
Wegen mangelnder Belege konnte die Behauptung kaum geprüft werden.
The claim could barely be evaluated because of a lack of evidence.
