diluer bedeutet auf Englisch

dilute [diluted, diluting, dilutes]▼◼◼◼(to add more of a solvent to a solution; especially to add more water)
verb
[UK: daɪ.ˈljuːt] [US: daɪ.ˈluːt]It has to be diluted with water. = Il faut le diluer dans l'eau.

water down▼◼◼◻(to dilute)
verb
[UK: ˈwɔː.tə(r) daʊn] [US: ˈwɒ.tər ˈdaʊn]