kept under ones hat (verb) withhold: keep back
Sinonime: associated, bilateral,
collective,
communal, conjoint, conjunct,
connected, convertible, correlative,
dependent, give-and-take, given and taken, interactive, interchangeable, interchanged, interdependent, intermutual,
joint, partaken, participated,
public,
reciprocal, reciprocated,
related, requited,
respective,
returned, two-sided,
unitedAntonime: detached, dissociated,
distinct,
separate, unshared