Ostrého

"Ostrého" is a Czech word that translates to "sharp" or "keen" in English. It is the genitive masculine singular form of the adjective "ostrý". This grammatical form is used when referring to something belonging to a masculine noun that is sharp or keen, or when the masculine noun is the object of certain prepositions or verbs that require the genitive case. For example, one might say "bolest ostrého nože" which means "the pain of a sharp knife".

The adjective "ostrý" itself can describe a variety of things. Physically, it refers to a sharp edge or point, such as that of a knife or a sword. Metaphorically, it can describe a keen intellect, a sharp wit, or a piercing sound. It can also denote intensity, as in "ostrý vítr" (a strong or biting wind) or "ostrý kontrast" (a sharp contrast).

The usage of "ostrého" is therefore context-dependent, relying on the grammatical case and gender of the noun it modifies or relates to. Understanding its genitive masculine singular form is crucial for correct grammatical construction in Czech when discussing masculine nouns that possess the quality of sharpness or keenness in a possessive or indirect object sense.