ambidextrously
am-bi-dex-trous-ly
adverb
In a manner demonstrating equal skill or dexterity with both hands.
"She writes ambidextrously, switching hands effortlessly."
Thesaurus
Synonyms: deceitful, two-faced, double-dealing, double-tongued, Janus-faced, double-faced, ambidextrous, dishonest, duplicitous, dishonorable, equipoised, two-handed
Antonyms: left-handed, right-handed