IPA: //prɪˈmɛdɪteɪdli//
KK: /prɪˈmɛdɪˌteɪɪdli/
In a way that is planned or thought out in advance, rather than done spontaneously or impulsively.
The crime was committed premeditatedly, showing that it was carefully planned.
Premeditatedly → It is formed from "pre-" (meaning before) and "meditari" (meaning to think or ponder). The word describes an action that has been thought out or planned beforehand.
Think of 'pre-' meaning before and 'meditari' meaning to think — this helps you remember that 'premeditatedly' refers to actions that are thought out in advance.