This is the 3059th most frequent French word.
ménager
To handle with care or to spare.
Here, 'ménager' means to conserve or manage resources, specifically one's energy.
Il faut ménager ses forces pour arriver à la fin de la course.
You should conserve your strength to reach the end of the race.
In this sentence, 'ménager' refers to taking care or being considerate of someone's feelings.
Il a essayé de ménager son interlocuteur tout en expliquant les erreurs.
He tried to be considerate to his interlocutor while explaining the mistakes.
Although a variation, 'aménager,' derived from 'ménager,' is used here to mean organizing or arranging a space.