自从他开始频繁邀请公司高层共进晚餐，同事们就怀疑他在攀附权贵。

His colleagues suspected him of ___social-climbing when he started inviting company executives to dinner regularly.

她总是参加高级俱乐部的活动，这种明显的攀附行为让朋友们很反感。

She always attends events at exclusive clubs, and this obvious ___social-climbing behavior annoys her friends.