My German teacher says that both of the above phrases are correct. However, based on what we have learned thus far, since "welch" is a 'der word', it takes a "-er" ending in the nominative case. Since "klug" is an adjective following a 'der word', it must take a "-e" ending in this case.

There are a few things I don't understand in this sentence.

  1. Are both versions correct? Why or why not?

  2. If so, is this a special case, or is there a general rule for when this is permissible? (The endings act as if "welch" is an 'ein word' in the second sentence.)

  3. This one's not as important, but since "welch" translates to "which", why is this sentence an exclamation(What a smart man!), rather than a question (Which smart man?). How would I ask "Which smart man?"

Thanks in advance for your help!

  • 10
    I'm not sure they're completely equivalent. I would use Welcher kluge Mann? for "Which smart man?" and Welch kluger Mann! for "What a smart man!". In accordance, "Welcher kluge Mann!" doesn't work, comparable to "Which smart man!".
    – user6191
    Nov 19, 2014 at 2:55
  • 1
    @Grantwalzer this should be an answer.
    – Hulk
    Nov 19, 2014 at 5:51
  • @Hulk Can't really explain why, though... and too lazy for research today, so it'd only be halfway there. Waiting for others to rise and shine.
    – user6191
    Nov 19, 2014 at 6:47

2 Answers 2


They are both (technically) correct, but they mean different things. (Actually, the exclamation mark is not: it would have to be a question mark in the first example.)

Welcher kluge Mann?

means "Which smart man?" (There are several).

Welch kluger Mann!

means "What a smart man!" (I admire him greatly.)

  • Would "Was für ein kluger Mann!" be equivalent to "Welch kluger Mann!" ?
    – persson
    Nov 22, 2014 at 22:16

The uninflected form welch is used in the expression welch ein, and sometimes before attributive adjectives.

Sie wunderte sich, welch ein dummer Mensch dies getan haben könnte.
Sie wunderte sich, welch dummer Mensch dies getan haben könnte.
Welch herrliche Aussicht!
Welch eine herrliche Aussicht!


Welche unerwartete Überraschung!
Welch unerwartete Überraschung!

Whenever you use the uninflected form, you need to take the strong inflection of the adjective.

Welcher as interrogative pronoun is always inflected and you must apply the weak inflection to the adjective that follows welcher.

You find a complete explanation and the quote above on canoo.net.

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