The phrasal verb 'work out' is predominantly used in informal speech but can appear in formal contexts depending on its meaning. In its most common usage, 'work out' refers to physical exercise, as in 'going to the gym to work out.' This usage is widespread and versatile across informal and some formal contexts concerning fitness and health. Additionally, 'work out' can mean to solve a problem or reach a resolution, as in 'We need to work out a solution to this issue,' which is applicable in both informal and formal settings, particularly in business and negotiation scenarios. The phrase can also imply that something was successful or effective, for example, 'The plan worked out well.' This versatility in meaning allows 'work out' to be used in various contexts, making it a well-rounded phrasal verb suitable for casual conversation as well as professional discussions, particularly when discussing problems and solutions.
B1
PreIntermediate
1. To perform physical exercise.
I work out at the gym three times a week.
She worked out for an hour before heading to work.
2. To find or calculate a solution to a problem or answer to a question.
I need to work out how much this will cost.
Let's work out the details before we sign the contract.