IPA: /ʌnˈwɜːrðɪli/
KK: /ʌnˈwɜrðɪli/
In a way that does not deserve respect or value.
He was treated unworthily by his peers despite his contributions.
Unworthily → It is formed from "un-" (meaning not) and "worthy" (from Old English "weorðe", meaning having worth or value) and the suffix "-ly" (meaning in a manner). The word "unworthily" means in a manner that is not worthy or deserving.
Think of 'not' ('un-') being combined with 'worthy' to remember that 'unworthily' means acting in a way that lacks worth.