This is the 286th most frequent Spanish word.
máximo
Highest or greatest.
Here, 'máximo' is employed as an adjective to describe the greatest possible effort the individual can exert.
Él da su máximo esfuerzo en cada competencia.
He gives his maximum effort in every competition.
In this context, 'máximo' functions as an adjective emphasizing the highest level of attention or meticulousness applied in the action.
La habitación está decorada con el máximo cuidado.
The room is decorated with the utmost care.
In this sentence, 'máximo' is used as a noun to represent the highest level or point, specifically the highest speed this car can achieve.