keep one's eyes open

Idioms  

1. Also,. Be watchful and observant. For example, We should keep our eyes open for a change in the wind's direction, or Keep your eyes peeled for the teacher. The first phrase dates from the late 1800s; the second and third, both colloquial and alluding to the lids not covering the eyes, date from the mid-1800s and 1830s, respectively.

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Example Sentences

See Examples For:

keep one's eyes open

It is as well to keep one's eyes open, constable, when investigating a case like this.'

From The Triumphs of Eugène Valmont by Barr, Robert

There’s any amount of real misery to be met with in the neighbourhood of the Docks, ay, and all over London, for that matter, if one only chooses to keep one’s eyes open.

From The Pirate Island A Story of the South Pacific by Staniland, C.J.

One had to keep one's eyes open there, for they were every bit as brave as we were.

From On the Pampas by Henty, G. A. (George Alfred)

“A very good school, I should say, Embleton; one has to keep one’s eyes open there.”

From With Cochrane the Dauntless by Henty, G. A. (George Alfred)

One has only to keep one's eyes open in passing the streets to become aware of the physical deterioration of thousands of the wage-earners.

From The Cost of Shelter by Richards, Ellen H.