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open (attitude, etc.); openhearted; frank; liberal
open (space); spacious
開放的な空間で仕事すると気持ちがいい。
Working in an open space feels good.
彼は開放的な性格で初対面でもすぐ打ち解ける。
He has an open personality and quickly warms up to people even on first meeting.
開放的な発想で考えろ。
Think with an open mind.