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The ClueReferee (7 letter answer)
NotesThe answer MEDIATE is seen occasionally, appearing about once every 850 puzzles.
Act as an agent
Settle, in a way
Do some work between parties
DefinitionMEDIATE as a verb:
1. (intercede, mediate, intermediate, liaise, arbitrate) = act between parties with a view to reconciling differences; "He interceded in the family dispute"; "He mediated a settlement"
2. occupy an intermediate or middle position or form a connecting link or stage between two others; "mediate between the old and the new"
MEDIATE as an adjective:
1. acting through or dependent on an intervening agency; "the disease spread by mediate as well as direct contact"
2. (in-between, mediate, middle) = being neither at the beginning nor at the end in a series; "adolescence is an awkward in-between age"; "in a mediate position"; "the middle point on a line"