This is the 9629th most frequent Japanese word.
肩入れ
"肩入れ" means "support" or "backing" for someone or something.
In this sentence, '肩入れ' is used to express support or backing for the local team, conveying a sense of active involvement or endorsement.
彼は地元チームに肩入れしています。
He supports the local team enthusiastically.
Here, '肩入れ' refers to political or ideological support, which can be controversial or cause discussion.
その政治家への肩入れが問題視されています。
Support for that politician is being regarded as problematic.
In this statement, '肩入れ' is applied to show active support or participation in efforts to help a friend's company thrive.