Keep up definitions

Keep up

1) Maintain 2) Not lag 3) Stay current 4) Stay informed
Found on https://www.crosswordclues.com/clue/keep-up

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keep up

[v] - maintain a required pace or level 2. [v] - keep informed 3. [v] - prevent from going to bed at night
Found on http://www.webdictionary.co.uk/definition.php?query=keep%20up

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keep up

verb prevent from going to bed at night; `The anticipation of the trip kept the children up all night`; `I kept myself up all night studying for the exam`
Found on https://www.encyclo.co.uk/local/20974

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