mu·tu·al 
(mych-əl)
(mych-əl)adj.
1.
a. Directed and received by each toward the other; reciprocal: mutual respect.
b. Having the same relationship to each other: "They were cognitive companions, mutual brain-pickers" (Cynthia Ozick).
c. Possessed in common: mutual interests.
2. Of, relating to, or in the form of mutual insurance.
n.
A mutual fund.
[French mutuel, from Old French, from Latin mūtuus, borrowed; see mei-1 in the Appendix of Indo-European roots.]
mu′tu·ali·ty (-ălĭ-tē) n.
mutu·al·ly adv.