This is the 3903rd most frequent German word.
tagsüber
"Tagsüber" means "during the day" in English.
Here, 'tagsüber' indicates the general time frame in the daytime hours during which the speaker works.
Ich arbeite tagsüber im Büro.
I work at the office during the day.
In this sentence, 'tagsüber' describes a natural phenomenon occurring specifically in the daytime.
Tagsüber scheint die Sonne besonders hell.
During the day, the sun shines particularly bright.
'Tagsüber' is used here to suggest a preferred or recommended time frame for an activity, namely shopping.