vigorous

vig|or|ous /v'ɪgərəs/
1 [ADJ]
Vigorous physical activities involve using a lot of energy, usually to do short and repeated actions.
Very vigorous exercise can increase the risk of heart attacks...
African dance is vigorous, but full of subtlety.
● vigorously [ADV] ADV after v
He shook his head vigorously...
2 [ADJ] usu ADJ n
A vigorous person does things with great energy and enthusiasm. A vigorous campaign or activity is done with great energy and enthusiasm.
Sir Robert was a strong and vigorous politician.
...a vigorous campaign against GM food.
● vigorously [ADV] ADV with v
The police vigorously denied that excessive force had been used.