טִיפַּת זֶפֶת בְּחָבִית דְּבַשׁ (כַּפִּית זֶפֶת בְּחָבִית דְּבַשׁ)

ביטוי (אנגלית)

A Drop of Tar in a Barrel of Honey/ A little venom bitters much sweet/ A drop of tar in a tin can (a drop of tar in a tin can)

הגדרה (אנגלית)

Figuratively: a small harmful thing found within a good system.

(Modern Hebrew. See also: “The barrel was clear, and you clouded them.”)