expression, godan verb (-ku)
have great influence; carry weight; have pull
Used when someone's opinion, connections, or authority hold significant sway in a particular domain or over others.
彼は地元の政治に幅が利く。
He has great influence in local politics.
あの先輩は会社で幅が利くから
That senior colleague carries a lot of weight in the company, so why not consult him?