BRZO

Brzo is a word used in several South Slavic languages, notably Croatian, Bosnian, Serbian, and Montenegrin, where it functions as an adverb meaning "fast" or "quickly." The corresponding adjective is brz (fast), with gendered forms brza and brzo.

Etymology: Brzo derives from a Proto-Slavic root associated with speed; it is part of a common Slavic pattern in which adverbs express manner or degree of speed, and has cognates in related languages.

Usage examples: "On je brzo hodao" (He walked quickly), "Brzo dođi!" (Come quickly!). In ordinary conversation, the word is used to describe the speed of actions and movements, as well as in imperatives urging speed.

Cross-linguistic note: while "brzo" is native to these languages, other Slavic languages have different adverbs with the same meaning, such as Russian быстро (bystro) and Polish szybko.