retr Идиома

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beat a hasty retreat

run away from, leave quickly When the boys heard the siren they beat a hasty retreat.

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beat a retreat|beat|retreat

v. phr. 1. To give a signal, esp. by beating a drum, to go back. The Redcoats' drums were beating a retreat. 2. To run away. They beat a retreat when they saw that they were too few. The cat beat a hasty retreat when he saw the dog coming.
Compare: BACK DOWN, FALL BACK.

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beat a retreat

beat a retreat
Also, beat a hasty retreat. Reverse course or withdraw, usually quickly. For example, I really don't want to run into Jeff—let's beat a retreat. This term originally (1300s) referred to the military practice of sounding drums to call back troops. Today it is used only figuratively, as in the example above.

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in retrospect

in retrospect
Looking backward, reflecting on the past. For example, In retrospect, he regarded his move as the best thing he'd ever done. This idiom employs retrospect in the sense of “a view of the past.” [Second half of 1600s]

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retreat

retreat
see beat a retreat.

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retrospect

retrospect
in retrospect
in reviewing the past