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.
to leave unmentioned
To deliberately not mention or address something. Often used in the negative to emphasize something in particular.
Ich möchte nicht unerwähnt lassen, dass Ihr Beitrag entscheidend für den Erfolg war.
I do not want to leave unmentioned that your contribution was crucial to the success.
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.
untouched
When referring to a topic, both words can mean that it played no role in a discussion. „Unberührt“ says that the topic was not dealt with substantively, while „unerwähnt“ rules out even simply mentioning it. If the topic was mentioned but not discussed, „unberührt“ is appropriate; if it was not mentioned at all, „unerwähnt“ is appropriate.
Das Thema blieb in der Besprechung unerwähnt und stand auch nicht auf der Tagesordnung.
The topic went unmentioned in the meeting and was not on the agenda either.
Das Thema blieb in der Besprechung unberührt, obwohl es auf der Tagesordnung stand.
The topic was left untouched in the meeting, even though it was on the agenda.
