Down to a science
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English
Adjective
down to a science
Perfected. The sentence I have my painting technique down to a science. means I have my painting technique perfected.. Practiced ease and confidance.
Usage Notes
Usually used after have <something>. Having something down to a science implies skill built through long practice or repitition. E.g. Painting the first few rooms was difficult; the next were easier, but now I have it down to a science..