inter-sĕro

sĕrŭi, sertum, 3, v. a.

2. sero

I. to put or place between, to interpose, add: causam interserens, Nep. Milt. 4, 1: oscula mediis verbis, Ov. M. 10, 559.
Lewis & Short
A Latin Dictionary, 1879
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