Synonyms of 'high and low'
▷ See high
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You use everywhere to emphasize that you are talking about a large number of places, or all possible places.
I looked everywhere but I couldn't find him.
the world over
in each place
in every nook and cranny
far and wide or near
to or in every place
Thesaurus for high and low from the Collins English Thesaurus
in all places; everywhere