Ambidextrousness as a noun is the state or quality of being ambidextrous. while Ambidexterity as a noun is the property of being equally skillful with each hand (from the idea that either hand is like your right hand).
Part of speech: noun
Definition: The state or quality of being ambidextrous.
Part of speech: noun
Definition: The property of being equally skillful with each hand (from the idea that either hand is like your right hand).
We hope you now know whether to use Ambidextrousness or Ambidexterity in your sentence.