Depositary rhymes with:
budgetary, sanitary, undersecretary, unitary, budgetary, cemetery, cometary, commentary, dietary, dignitary, dysentery, fragmentary, hereditary, interplanetary, involuntary, military, momentary, monastery, monetary, nonmilitary, paramilitary, pituitary, planetary, proprietary, salutary, sanitary, secretary, sedentary, solitary, tributary, undersecretary, unitary, unsanitary
Depositary sounds like:
defector, depositor, depository, divestiture