American Idioms – Idiom Wizard Lists Over 5,500 Idioms & Slang Descriptions

Light at the end of the tunnel

DEFINITION

A hint of a successful conclusion. You can see finality after a long and difficult process. ‘Tunnel’ refers to a demanding series of challenges, so the phrase implies that the light at the end of this tunnel signals an end to the trouble.¬† (Compare to Long road.)

“Although Covid-19 has killed thousands around the world, the scientist said he could see light at the end of the tunnel with an upcoming vaccine.”

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