IPA: /əˈsʌndər/
KK: /əˈsʌndər/
Separated into parts or pieces; apart from each other.
The storm tore the old tree asunder, leaving branches scattered everywhere.
In a way that separates or divides into parts; apart from each other.
The storm tore the old tree asunder, leaving it in two pieces.
Asunder originates from Old English 'asundran', meaning to separate or divide. The word is formed from 'a-' (meaning away) and 'sundor' (meaning separate). Thus, asunder means to be apart or divided.
Think of something being 'away' ('a-') and 'separate' ('sundor') — that's why asunder means to be apart or divided.