speaking of
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speaking of
Introduces a new but related topic that occurred to someone because of what was just said.
Ich habe gestern Anna getroffen. Apropos, weißt du schon, dass sie umzieht?
I ran into Anna yesterday. Speaking of which, do you already know that she's moving?
'Apropos' (speaking of) usually stands at the beginning of a sentence or clause. It introduces a new thought, but it does not change the normal word order of the following main clause (subject in position 1 or directly after 'apropos').
Wir müssen noch einkaufen. Apropos, der Supermarkt hat heute länger geöffnet.
We still need to go shopping. Speaking of which, the supermarket is open later today.
You use 'apropos' (speaking of) to change the topic elegantly in conversation. It signals to the person you are speaking with: 'What you just said reminds me of something else.'
Mein Auto ist kaputt. Apropos, kannst du mich morgen zur Arbeit fahren?
My car is broken. Speaking of which, can you drive me to work tomorrow?
In a more formal or older style, 'apropos' (with regard to) can also be used with a noun in the genitive. It then means 'regarding' or 'concerning.'
Apropos des neuen Projekts gibt es noch einige offene Fragen.
Regarding the new project, there are still some open questions.
by the way
'übrigens' and 'apropos' both introduce a new thought in conversation. The difference lies in the connection to what was said before. 'übrigens' can bring in additional information that is not directly related to the topic. 'apropos' is used when the new topic is triggered by the previous topic and is connected to it. Learners may confuse the words because both often appear at the beginning of a sentence and shift the topic. As a guide: 'übrigens' is more like 'one more thing', while 'apropos' is more like 'speaking of that'.
Apropos Einkaufen: Hast du schon Brot für das Abendessen besorgt?
Speaking of shopping: Have you already bought bread for dinner?
In der Pause sagt Lisa: „Übrigens, morgen fällt die erste Stunde aus.“
During the break, Lisa says, "By the way, the first lesson is canceled tomorrow."