unmentioned
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unmentioned
Not named or addressed; deliberately or unintentionally left out in a speech, text, or list.
Einige wichtige Details blieben in seinem Bericht leider unerwähnt.
Unfortunately, some important details remained unmentioned in his report.
The word is made up of the prefix 'un-' (not) and 'erwähnt' (mentioned), the past participle of 'erwähnen' (to mention). So it literally means 'nicht erwähnt' (not mentioned) or 'nicht genannt' (not named).
Seine Hilfe blieb in der Dankesrede leider unerwähnt.
Unfortunately, his help remained unmentioned in the thank-you speech.
Similar to other participles with 'un-', 'unerwähnt' (unmentioned) is often used in connection with the verb 'bleiben' (to remain). The phrase 'etwas bleibt unerwähnt' means that a piece of information was not mentioned.
Die Risiken des Plans blieben in der Präsentation völlig unerwähnt.
The risks of the plan remained completely unmentioned in the presentation.
The expression 'etwas nicht unerwähnt lassen' (not to leave something unmentioned) is a rhetorical device used to emphasize a point in particular. You say that you do not want to conceal something in order to underline the importance of this information.
Ich möchte nicht unerwähnt lassen, dass das ganze Team hart gearbeitet hat.
I do not want to leave unmentioned that the whole team worked hard.
to mention
'erwähnen' and 'unerwähnt' stand in clear contrast to each other. When you mention something, you briefly name it in a conversation or text. When something remains 'unerwähnt' (unmentioned), it is not named or is deliberately left out. 'unerwähnt lassen' (to leave unmentioned) especially means that someone intentionally does not bring up a topic. A practical way to remember it: 'erwähnen' means to name something briefly; 'unerwähnt' means not mentioned.
Der wichtige Termin blieb in der E-Mail leider unerwähnt.
Unfortunately, the important appointment remained unmentioned in the email.
Im Bericht erwähnt sie auch die neuen Sicherheitsregeln.
In the report, she also mentions the new safety rules.