diametrically

adverb

di·​a·​met·​ri·​cal·​ly -rə̇k(ə)lē 

-rēk-, 

-li

1

: as if at opposite ends of a diameter

differing diametrically from the earlier conception

: completely, utterly

ideas diametrically opposite to his own

2

: at or along the diameter : in the direction of the diameter

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