Use 'wittingly' to express actions made with intentional awareness or decision, opposite of accidental. She wittingly avoided answering the question.
Pro Tip 2/3
Emphasized Intention
'Wittingly' adds emphasis to the deliberate nature of an action - more than just saying 'on purpose'. He wittingly chose the longer route to enjoy the scenery.
Pro Tip 3/3
Not Always Positive
While intentional, 'wittingly' doesn't imply the action is good or bad, only that it's done knowingly. They wittingly spread false information.