IPA: /ˌoʊvərɪɡˈzɜrt/
KK: /oʊvərɪˈzɜrt/
To use too much effort or energy, often leading to tiredness or injury.
He overexerted himself during the marathon and had to rest afterward.
Past: overexerted
Past Participle: overexerted
Overexert → It is formed from "over-" (meaning excessively) and "exert" (from Latin "exertus", meaning to put forth or apply). The word "overexert" means to apply oneself excessively or to put forth too much effort.
Think of putting in effort 'excessively' ('over-') — that's why overexert means to apply too much effort.
No commonly confused words.