IPA: /ʌnˈænsərəbli/
KK: /ʌnˈænsərəbli/
In a way that cannot be answered or disputed; something that is impossible to respond to or counter.
The evidence was presented unanswerably, leaving no room for doubt.
Unanswerably → It is formed from "un-" (meaning not) and "answer" (from Old English "andswaru", meaning a response) and "-ably" (meaning in a manner that can be). The word means in a manner that cannot be responded to or answered.
Think of 'not' ('un-') being combined with 'response' ('answer') and the suffix that indicates a manner ('-ably'). This helps you remember that 'unanswerably' means something that cannot be responded to.