like someone owns the place

Adverb

derogatory idiomatic not-comparable

(idiomatic, derogatory) In a self-important and domineering manner; self-importantly, arrogantly.

Japanese Meaning

自分が支配者であるかのように振る舞う、威張っている様子 / 自己重要感を前面に出して横柄な態度を取る様子 / 独裁的・横暴な態度で振る舞う様子

She walked into the meeting like someone owns the place, ordering people around without apology.

彼女は会議に、まるで自分がここを所有しているかのように入ってきて、遠慮なく人に命令した。

Sense（1）

(idiomatic, derogatory) In a self-important and domineering manner; self-importantly, arrogantly.