Lose/Lost/Trying someone's patience
Lose/Lost/Trying someone's patience (English) — To lose your patience means that you are unable to tolerate something any further. That you have reached the point of showing anger. If anger is showing then patience is lost. Nothing is actually misplaced or misled. "I'm losing my patience with him." Trying someone's patience means they are irritated, but not yet fully, openly angry. "Quit that tapping, you are trying my patience!"