In a figurative sense: to negatively affect a positive situation or event, or push it into the background through something negative.
example
Die Freude über den Sieg wurde von der schweren Verletzung des Kapitäns überschattet.
The joy over the victory was overshadowed by the captain's serious injury.
Usage tips
Inseparable verb
'Überschatten' (to overshadow) is an inseparable verb. The prefix 'über-' is never separated from the verb. The stress is on the second syllable: über-SCHAT-ten.
EXAMPLE
Der Streit überschattete das Familientreffen.
The argument overshadowed the family gathering.
Word structure
The word consists of 'über' (over) and 'Schatten' (shadow). The idea that something casts a dark shadow over something else explains both the literal meaning and the figurative meaning of a negative influence.
EXAMPLE
Ein großes Gebäude überschattet unseren Balkon am Nachmittag.
A large building shades our balcony in the afternoon.
Common usage
The figurative meaning is very common in everyday language and in the news. It is almost always used to describe how a negative event, such as an accident or a scandal, negatively affects an otherwise positive situation.
EXAMPLE
Die wirtschaftliche Krise überschattet die politischen Diskussionen.
The economic crisis overshadows the political discussions.
Compare with
near_synonym
überschatten vs belasten
to burden / charge
'belasten' and 'überschatten' can both express that something negative makes a situation more difficult. 'belasten' usually refers to people, relationships, or decisions: someone feels pressure, worry, or inner heaviness. 'überschatten' is used more for events or situations that are actually positive. In that case, a negative event pushes everything else into the background. So a worry can 'belasten' a person, but an accident can 'überschatten' a celebration or trip. 'überschatten' sounds more figurative and fits well when joy is reduced.
überschatten
Der plötzliche Regen überschattet das Sommerfest im Park.
The sudden rain overshadows the summer party in the park.
belasten
Der Streit im Team belastet die Zusammenarbeit.
The conflict within the team is putting a strain on their cooperation.