green light

☆

Informal permission or authorization to proceed with some undertaking, as a project to make a film from a proposed script

Origin: in allusion to the green “go” signal of a traffic light

See green light in American Heritage Dictionary 4

noun

or green·light

transitive verb green-light·ed or green·light·ed, green-light·ing or green·light·ing, green-lights or green·lights
Informal

To give permission to proceed with: “[He] commissioned the pilot that became ‘Captain Kangaroo’ and greenlighted the series” (Variety).

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