Okay, the user wants me to translate "one-hitter" into Ukrainian. Let me think about the possible translations. The term "one-hitter" can have different meanings depending on context. In sports, like baseball, a "one-hitter" refers to a pitcher who allows only one hit in a game. In a more general sense, it might mean someone who achieves success with a single effort.
First, I need to check if there's a direct Ukrainian equivalent. The literal translation would be "один удар" (one hit), but that might not capture the nuance. In sports contexts, Ukrainian might use "один удар" or "одноударник" (one-hit player). However, I should verify if these terms are commonly used.
Alternatively, if the user is referring to something like a one-time success, maybe "одноразовий успіх" or "одноразова вдача." But without more context, it's safer to stick with the direct translation. Also, the user specified to output only the translation without explanations, so I need to make sure I provide just the result. Let me confirm if "один удар" is the most accurate. I think that's the best fit unless there's a specific term I'm missing. Alright, I'll go with "один удар."