The phrase "wert on safe side" means taking precautions to prevent potential harm or risk. There are several interchangeable synonyms for this phrase that can be used depending on the context or situation. Some alternatives include "erring on the side of caution," "being prudent," "taking preventative measures," "playing it safe," and "taking no chances." These synonyms all convey a similar message of being cautious and avoiding potential negative consequences. By using these phrases, individuals can communicate their desire to prioritize safety and protect themselves and others from harm. Ultimately, whichever phrase is chosen, prioritizing safety and taking precautions is always a wise decision.