/ ˈmjuːtʃuəl; NAmE / adjective
1.
used to describe feelings that two or more people have for each other equally, or actions that affect two or more people equally :
mutual respect / understanding
mutual support / aid
I don't like her, and I think the feeling is mutual (= she doesn't like me either) .
2.
[ only before noun ] shared by two or more people :
We met at the home of a mutual friend.
They soon discovered a mutual interest in music.
► mu·tu·al·ity / ˌmjuːtʃuˈæləti; NAmE / noun [ U , C ] ( formal )
••
WORD ORIGIN
late 15th cent.: from Old French mutuel , from Latin mutuus mutual, borrowed; related to mutare to change.