Definition of weigh up

The phrase "weigh up" is a figurative expression that originated in the 19th century. It is a metaphorical use of the verb "weigh" which is generally associated with measuring physical objects. When we say, "I need to weigh up my options," we're using a medical term in reverse. In the past, physicians weighed patients and recorded their weight as a part of their medical analysis. In a similar vein, "weighing up" refers to making an assessment or analysis of a situation, problem, or opportunity. It involves evaluating the relative merits or drawbacks of different options, based on a variety of factors, before making a decision. The concept of "weighing up" in this sense may also draw from the legal term "balance of probabilities." This is the standard used in many legal proceedings to determine whether there is a greater likelihood of something being true than not. By "weighing up" the evidence, one can arrive at a reasonable and considered judgment. In modern usage, "weigh up" is an idiomatic expression found in many English-speaking countries, particularly in the UK and Australia. It is used in a variety of contexts, from business and finance, to personal decision-making, and implies a thoughtful, considered approach to decision-making. Its literal roots in the concept of weighing objects may seem removed, but its origin is an interesting example of the way English has evolved over time, adapting existing words and concepts to meet new needs and demands.