To subject to an excessive burden or strain.(verb-transitive)
To tax in excess of what is considered appropriate or just.(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "overtax" in a sentence
"But as more EVs replace regular cars, they could overtax the current power grid if they aren't charged at off-peak times."
"No matter how strong your willpower muscle becomes, it's important to always respect the fact that it is limited, and if you overtax it, you will temporarily run out of steam."
""Teaching" universities completely disinterested in competitive research can hire absolutely brilliant professors and then overtax them by not giving them support."