deteriorator|dɪˈtɪərɪəreɪtə(r)| [agent-n. in L. form, from dēteriōrāre to deteriorate.] One who or that which deteriorates. 1857H. Miller Test. Rocks vi. 234 It is man..that is the deteriorator of man.1883Daily Tel. 25 Apr. 3 Cities are great deteriorators of physical strength.