0 present participle of underestimate
1 to fail to guess or understand the real cost, size, difficulty, etc. of something:
Originally the contractor gave me a price of €2,000, but now they say they underestimated and it's going to be at least €3,000.
Don't underestimate the difficulties of getting both parties to the conference table.
2 to fail to understand how strong, skilful, intelligent, or determined someone, especially a competitor, is:
He miscalculated badly when he underestimated the response of the international community to the invasion.
They've seriously underestimated the cost of the building project.
It seems that we've seriously underestimated just how long this process will take.
Note, that this cautious measure may lead to underestimating the errors in the corpora.
Treating independents in this fashion leads to underestimating volatility.
This has the effect of underestimating the tenure of single-party governments as compared to that of parties in coalitions.