Definition of "misspeculate"
verb
third-person singular simple present misspeculates, present participle misspeculating, simple past and past participle misspeculated
To speculate incorrectly; to make or act on a false conjecture.
Quotations
There is no reason why "aggrieved" persons should, by the contract law of damages, be put in a better position than they would have occupied had they performed; secondly, the agreed market and risk allocations should not be upset by the often unclear question of who was in breach; and thirdly, the law should not encourage those who misspeculate to escape obligation by claiming that the other person is, for some contrived reason, in breach.
2003, Richard E. Speidel, Ian Ayres, Studies in Contract Law, page 907