IPA: /ˌʌn.ɪn.təˈrʌp.tɪd.li/
KK: /ʌnˌɪn.təˈrʌp.tɪd.li/
In a way that does not stop or pause; continuously without breaks.
She spoke uninterruptedly for an hour during the presentation.
Uninterruptedly → It is formed from "un-" (meaning not), "interrupted" (from Latin "interrumpere", where "inter-" means between and "rumpere" means to break), and "-ly" (meaning in a manner). The word means in a manner that is not broken or disturbed.
Think of 'not' ('un-') breaking 'between' ('inter-') and 'to break' ('rumpere') — that's why uninterruptedly means something that continues without breaks.