blue sky

• Expression informelle désignant une vision ou une idée claire, optimiste ou idéaliste, souvent utilisée dans un contexte professionnel ou créatif pour évoquer une réflexion sans contraintes.

An informal expression referring to a clear, optimistic, or idealistic vision or idea, often used in business or creative contexts to describe thinking without constraints or limitations.

1. Clear weatherA1formal

   A sky that is clear and free of clouds, often associated with good weather.

   ciel bleu

   • The blue sky made the day perfect for a picnic.
   • We could see the blue sky through the window.
   • The children played outside under the blue sky.

2. Optimistic or idealisticB2informal

   Used to describe ideas or plans that are creative, optimistic, and not yet constrained by practical limitations.

   vision optimiste ou idéaliste

   • The team had a blue sky brainstorming session for new products.
   • His blue sky proposal was exciting but unrealistic.
   • We need some blue sky thinking to solve this problem.