IPA: /ɪnˈsɪkjʊrli/
KK: /ɪnˈsɪkjʊrli/
In a way that shows a lack of confidence or assurance.
She spoke insecurely during the presentation, unsure of her words.
Insecurely → It is formed from "in-" (meaning not) and "securus" (from Latin, meaning safe or secure) and the suffix "-ly" (meaning in a manner). The word "insecurely" means in a manner that is not safe or secure.
Think of 'not safe' ('in-') and 'secure' ('securus') to remember that 'insecurely' means doing something in a way that lacks safety.