dextrosinistral

adjective

dex·​tro·​si·​nis·​tral ˌdek-strə-ˈsin-əs-trəl  -sə-ˈnis- 

1

: extending from the right toward the left

2

: naturally left-handed but trained to use the right hand in writing

dextrosinistrally

-ē 

adverb