{f} reach too far; project beyond; miss a target by going too far; defeat (oneself) by making an excessive effort; outsmart, get the better of; overtake; painfully strike the back and front foot together when running or walking (of a horse)
If you say that someone overreaches themselves, you mean that they fail at something because they are trying to do more than they are able to. The company had overreached itself and made unwise investments. overreach yourself to try to do more than you have the power, ability, or money to do