Fetching details from the dictionary...

to be mixed; to be blended with; to associate with; to mingle with; to join
いろいろな感情が雑ざって複雑な気持ちだ。
Various emotions are mixed, making my feelings complex.
料理中に砂糖と塩が雑ざって分からなくなった。
Sugar and salt got mixed together.
この街は多様な国の文化が雑ざり合う国際的な都市だ。
It's a city where diverse cultures are blended.