IPA: /ɪnˈsɪpɪdli/
KK: /ɪnˈsɪpɪdli/
In a way that is dull, lacking flavor, or not interesting.
The lecture was delivered insipidly, causing many students to lose focus.
Insipidly is formed from "insipid" (from Latin "insipidus", meaning tasteless or lacking flavor) and "-ly" (a suffix meaning in a manner of). The word describes doing something in a tasteless or dull manner.
Think of 'tasteless' ('insipid') to remember that 'insipidly' means doing something in a dull or flavorless way.