Rýchlo

Rýchlo is a Slovak adverb meaning fast or quickly. It is used to describe the manner of an action and typically modifies a verb, as in bežať rýchlo (to run quickly) or urobiť to rýchlo (to do it fast). The word conveys speed or immediacy in how something is performed.

Grammatically, rýchlo is invariable; it does not change for gender, number, or case. It forms comparative and superlative expressions with standard Slovak patterns for adverbs: rýchlejšie means more quickly, and najrýchlejšie means most quickly or fastest. These forms are commonly used to compare different actions or performances.

Rýchlo is derived from the adjective rýchly (fast). In Slovak, many adverbs of manner are formed from adjectives in this way, often by using the ending -o or by other adjustment patterns. The word is cognate with the Czech rychle, reflecting close historical and linguistic ties within the West Slavic and Slovak-Czech language continuum.

Related terms include rýchlosť (speed, velocity) and rýchly (fast). In usage, rýchlo appears across registers from everyday speech to formal writing and is a core component in expressions describing the speed of events, processes, or responses.