IPA: /ɪnˈsɛpəreɪbli/
KK: /ɪnˈsɛpərəbli/
In a way that cannot be separated or divided; closely connected or linked together.
The two friends were inseparably bonded through their shared experiences.
Inseparably → It is formed from "in-" (meaning not) and "separabilis" (from Latin, meaning separable, derived from "separare" meaning to separate). The word "inseparably" means in a manner that cannot be separated or apart.
Think of 'not' ('in-') being able to 'separate' ('separabilis') something — that's why inseparably means it cannot be separated.