IPA: /ˌɪn.ɪˈlɛk.wənt.li/
KK: /ɪnˈɛləkwəntli/
In a way that lacks fluency or expressiveness in speech or writing.
He spoke ineloquently during the presentation, making it hard for the audience to understand his points.
Ineloquently → It is formed from "in-" (meaning not) and "eloquent" (from Latin "eloquens", meaning speaking out or fluent) and the suffix "-ly" (meaning in a manner). The word describes a manner of speaking that is not fluent or articulate.
Think of 'not' ('in-') speaking 'fluently' ('eloquent') — that's why ineloquently means speaking in a way that lacks eloquence.