This is the 762nd most frequent Portuguese word.
vigor
Strength, energy, or vitality.
The word 'vigor' here refers to physical strength and energy, illustrating the athlete's performance.
O atleta demonstrou muito vigor durante a competição.
The athlete showed a lot of vigor during the competition.
The term 'vigor' in this context means that the law became active and enforceable.
A lei entrou em vigor no início deste ano.
The law came into force at the beginning of this year.
In this sentence, 'vigor' describes the forcefulness and determination of his response.