In a way that involves physical strength, effort, or energy; Synonyms: strongly, powerfully, forcefully, aggressively
Ex: Little girl brushing her teeth vigorously with a white toothbrush
Ex: Woman caught on video vigorously shaking baby on street corner
Ex: I nodded my head so vigorously
Ex: The women take turns washing their hands, scrubbing them vigorously.
Ex: Good-bye,” she said, vigorously waving both hands as she went away.
Ex: “It is!” declared the boy, rubbing his own face vigorously.
Immersion in English - Makes You Perfect 