Definition & Meaning of "test the waters"

What is the origin of the idiom "test the waters" and when to use it?

The idiom "test the waters" has nautical origins and refers to the practice of checking the depth of water in an unfamiliar area before proceeding with a boat or ship. This was crucial for navigational safety, ensuring that the water was deep enough to avoid grounding or other hazards. In a figurative sense, the idiom is used to describe the act of cautiously trying out or assessing a situation before fully committing to it, particularly in matters of decision-making or exploration.