mutual

mutual is an Adverb

Definition:

[1] Reciprocally acting or related; reciprocally receiving and giving; reciprocally given and received; reciprocal; interchanged; as, a mutual love, advantage, assistance, aversion, etc. Conspiracy and mutual promise. Sir T. More. Happy in our mutual help, And mutual love. Milton. A certain shyness on such subjects, which was mutual between the sisters. G. Eliot.

[2] Possessed, experienced, or done by two or more persons or things at the same time; common; joint; as, mutual happiness; a mutual effort. Burke. A vast accession of misery and woe from the mutual weeping, and wailing, and gnashing of teeth. Bentley.