"Wert one case" is an archaic phrase that refers to a hypothetical scenario or situation. There are several synonyms for this phrase that can be used in modern English, such as "if such a situation arose", "in the event that one case", "should this situation occur", or "in the hypothetical scenario that". These synonyms can help to clarify the meaning of the phrase, making it more accessible for contemporary readers. It is important to use words and phrases that are familiar and understandable to a wider audience, as this can help to ensure that your writing is effective and engaging.