A phrase used to express something from the opposite angle or to contrast; similar to 'conversely' or 'put another way'.
彼は仕事は早い。逆に言うと、細部に注意を払わないこともある。
He's fast at work. Conversely, that means he sometimes doesn't pay attention to details.
逆に言うと、経験が浅い人には向かない職場だ。
Put another way, it's a workplace not suited to inexperienced people.
その点は正しい。逆に言うと、別の問題が出てくる可能性もある。
That point is correct. Conversely, another problem may arise.