IPA: /spəˈrædɪkli/
KK: /spɔːˈrædɪkli/
In a way that happens occasionally or at irregular intervals, rather than continuously or regularly.
The rain fell sporadically throughout the day, making it hard to plan outdoor activities.
Sporadically → It is formed from "sporadikos" (from Greek, meaning scattered) and the suffix "-ally" (meaning in a manner). The word "sporadically" means occurring in a scattered or irregular manner.
Think of events that happen 'scattered' ('sporadikos') and remember that 'sporadically' means they occur in an irregular way.