The "peak gate nonturn-off current" refers to the maximum amount of electric current that flows through the gate of a transistor when it is not turned off. Synonyms for this term may include "maximum gate current," "peak gate drive current," or "maximum gate-source leakage current." These terms all describe the same characteristic of a transistor, but may be more specific to different applications or types of transistors. It is important to understand the peak gate nonturn-off current in order to properly design and utilize electronic circuits and systems. By choosing the appropriate transistor and controlling the gate voltage, the nonturn-off current can be minimized for optimal performance.