out of patience
Having no more patience left; unable to remain patient any longer. I've been waiting for almost two hours to be seen by the doctor, and I am nearly out of patience. I could tell the teacher was running out of patience with that troublemaker Jeff.
*out of patience
annoyed and impatient after being patient for a while. (*Typically: be ~; run ~.) I finally ran out of patience and lost my temper. The boss is finally out of patience with me.