This is the 712th most frequent Spanish word.
perder
"Perder" means "to lose."
In this sentence, 'perder' is used to mean 'wasting' in the context of time or resources.
No me gusta perder tiempo en actividades inútiles.
I don't like wasting time on useless activities.
Here, 'perder' indicates 'losing' in the context of a competition or event.
El equipo local podría perder el partido si no mejora su defensa.
The local team could lose the game if they don't improve their defense.
In this case, 'perder' is reflexive, meaning 'to get lost,' illustrating being unable to find a way.