idioms using “light”

Give the green light

To authorize action, to allow something to proceed

“The board of directors has given the green light to build the new factory in Thailand.”

In the light of day

To reconsider something later in a more practical way

“In the light of day, the idea to redesign the company logo isn’t such a great idea after all.”

See the light at the end of the tunnel

To realize the end of a difficult situation is near

“Though the company almost went bankrupt, sales are increasing now and we can see the light at the end of the tunnel.”

Out like a light

To be sound asleep

“The programmer wrote code all night and was found slumped over at his desk, out like a light.”

See the light

To finally understand or agree, (after a long time of not understanding or agreeing)

“After seeing our competitor’s product, the chairman finally saw the light and agreed to increase our R&D budget.”