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Dienstagabend is a noun, but somehow used in an adverbial way here – why is it capitalized?

Is it the same like saying "Sie kommt nachher"? (Although no one would write "Sie kommt Nachher", from "das Nachher"...)

What's the name of this grammatical construct?

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In the traditional spelling, it is Sie kommt Dienstag abend. –  chirlu Oct 3 '13 at 16:17

2 Answers 2

up vote 4 down vote accepted

The adverbial version of Dienstagabend is dienstagabends. The former is a noun, the latter an adverb. The former should be capitalized, the second shouldn't. Nevertheless they differ in meaning:

Sie kommt Dienstagabend

means that she comes once, when? This (or specified by the context) Dienstagabend, which is not an adverb, but a time complement. On the other hand

Sie kommt dienstagabends

means, she usually comes on tuesday afternoons.

With nachher, it seems the inverse process: das Nachher is a nominalized adverb nachher.

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Ok - do you know how this grammatical construction that is used to use a noun as a time complement is called? It seems to be quite limited, as you for example cannot say "Sie kommt drei" but "Sie kommt um drei". –  Bernardo Straite Oct 3 '13 at 13:59
@O.R.Mapper Es könnte ein vergängliches Parkinson-symptom meines linken Zeigefingers darstellen, das zu einem t-Überschuss beigetragen hat. Ich kann aber das nicht mehr ändern: Kommentare sind nicht zu editieren. –  c.p. Apr 6 at 11:47
@O.R.Mapper Stimmt, ich hatte Unrecht. Auch eine i-Mangel und eine Verletzung der Trennungseigenschaften der Verben :) Danke für den Hinweis. Dazu, da der OP nicht so oft hier ist, lösche ich jetzt den Kommentar. –  c.p. Apr 6 at 11:58

Because "Dienstagabend" as a noun-noun compound is 100% a noun.

The sentence is lacking an "am" which is and can be also said as "an dem" ("on the") and then you could use the article rule that with most of the cases, a noun or a nominalized word will follow somewhere that you'll have to capitalize. The one main exception would be superlatives of adjectives ("am besten") ("at best") which can't be split up into "an dem" Besten ("at the best" in this case) and therefore stays with lowercases, since it's a trait on a question that could be asked with "wie" ("how") and not a matter that could be asked with "wer/wen/wem oder was"/"wessen" ("who/whom or what" /"whose").

You can also take a look at the official rules mentioned in the Duden, the German pendant to the Oxford Dictionary:

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