IPA: /ˌoʊvərfəlˈfɪl/
KK: /oʊvərfəlˈfɪl/
To meet or exceed a requirement or expectation, especially in terms of quantity or performance.
The team managed to overfulfill their sales targets this quarter.
Past: overfulfilled
Past Participle: overfulfilled
Overfulfill → It is formed from "over-" (meaning excessively) and "fulfill" (from Old English "fullfyllan", meaning to fill completely). The word "overfulfill" means to fill or satisfy something to an excessive degree.
Think of doing something 'excessively' ('over-') to 'fill completely' ('fulfill') — that's why overfulfill means to satisfy beyond what is necessary.
No commonly confused words.