Commentaire sur La Genèse 40:6

זעפים means SAD. Similar are (1 Kings 20:43) “sullen and displeased (וזעף)”; (Micah 7:9) “I will bear the displeasure (זעף) of the Lord (the sadness which the Lord has imposed on me).’

והנם זועפים, and they were distressed. According to our sages in Berachot 55 the reason that both of them were distressed was that they both dreamt the meaning of the other's dream. The chief butler was distressed having seen in his dream what was going to happen to his companion the chief baker. Whereas the chief baker had seen in his dream that the chief butler would be reinstated he had nonetheless prepared himself for adversity and could not bring himself to have peace of mind.

זעפים, each one of them was deeply upset about the dream he had had as they could not figure out its significance.