Mutual means felt or done by each side towards the other. Mutual respect, the feeling is mutual, mutual agreement.
Strictly it needs two parties acting on each other, so a mutual friend is loose usage that purists once fought and everybody now accepts — Dickens put it in a title. A mutual company is one owned by its customers. The Latin mutuus means reciprocal.
1adjectivemutualFelt or done by each side towards the other.
“They didn't like each other, and the feeling was mutual.”
mutual is a quality of reciprocity.
Latin mutuus means borrowed or reciprocal, from mutare, to change or exchange.
Proto-Indo-European
*mey- (change)
Latin
mūtuus
Middle French
mutuel
English, today
mutual
Borrowed from Middle French mutuel, from Latin mūtuus. Displaced native Old English ġemǣne.
Etymology from Wiktionary, CC BY-SA