* To ask: This is the most common meaning. For example, "Rogar por ayuda" (to ask for help) translates to "to beg for help" in English.
* To beg: This is a stronger form of asking, often used when someone is desperate or pleading for something. For example, "Rogar por perdón" (to beg for forgiveness) translates to "to plead for forgiveness" in English.
* To request: This is a more formal way of asking. For example, "Rogar un favor" (to request a favor) translates to "to ask for a favor" in English.
Therefore, the best way to translate "Rogar" in English depends on the context and the level of formality you want to convey.