intercede
v.
1570s, a back-formation from intercession, or else from Latin intercedere "intervene, come between, be between," from inter- "between" (see inter-) + cedere "go" (see cede). Related: Interceded; interceding.
〔李〕[inter-=between在…之间；ced=to go 走；-e⇒“to go between two parties 在双方之间奔走”→] v. ask a favour from one person for another 代为请求，说情
〔蒋〕[inter-中间，…之中，ced行；“介入其中”] 居间调停，调解，代为说情，代为请求