The name "Gregg" is a shortened form of the name Gregory, which originally comes from the Greek word "gregorios," meaning vigilance or watchful. Some possible synonyms for the name Gregg could be Greg, Gregory, or even Gregor, which is the German equivalent. Other variations of the name include Grigori, which is the Russian form, and Grigory, which is the full version of the name in English. Nicknames like Grey, G, and G-Man could also be considered synonyms for Gregg, as they all stem from the same name. Regardless of which version someone uses, the name Gregg carries a strong sense of leadership, loyalty, and discipline.