in den Flitterwochen

on their honeymoon

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phrase Rare #42,316
on their honeymoon Can also mean “during the honeymoon,” especially when describing an activity.
GE: Wir sind in den Flitterwochen in Italien.
EN: We’re on our honeymoon in Italy.

Tom und Maria sind gerade in den Flitterwochen.

Tom and Maria are currently on their honeymoon.

In den Flitterwochen fliegen Tom und Maria nach Jamaika.

For their honeymoon, Tom and Maria fly to Jamaica.

Was immer du tun willst, tu es in den Flitterwochen.

Whatever you want to do, do it on your honeymoon.

— Queen (2014)

Tom und Maria sind in den Flitterwochen.

Tom and Maria are on their honeymoon.

Den besuchen wir in den Flitterwochen.

We'll visit him during our honeymoon.

— Queen (2014)