IPA: /ˌoʊvərəˈtʃiv/
KK: /oʊvərəˈtʃiv/
To do better than what was anticipated or to reach higher levels of success than expected.
She tends to overachieve in her studies, often getting the highest grades in her class.
Past: overachieved
Past Participle: overachieved
Overachieve → It is formed from "over-" (meaning excessively or beyond) and "achieve" (from Old French *achever*, meaning to complete or bring to a conclusion). The word "overachieve" means to achieve more than what is expected or required, going beyond the standard level of accomplishment.
Think of doing something 'beyond' ('over-') what is 'completed' ('achever') — that's why overachieve means to accomplish more than expected.