in one's element
in one's element {adv. phr.}
1. In one's natural surroundings.
The deep-sea fish is in his element in deep ocean water.
2. Where you can do your best.
John is in his element working on the farm.
Compare: AT HOME 2.
Contrast: OUT OF ONE'S ELEMENT.
Categories:
Source: A Dictionary of American Idioms
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