Definition of “be running on empty” - English Dictionary

English

“be running on empty” in English

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be running on empty

informal

to continue to work and be active when you have no energy left:

I get the impression he's been running on empty for months now. A holiday will do him good.

mainly US and Australian English If a person or an organization is running on empty, they have no new ideas or are not as effective as they were before:

The fund-raising campaign was running on empty after ten years under the same leader.

(Definition of “be running on empty” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)