Learn how to say Underestimating correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word underestimate:
estimate (something) to be smaller or less important than it really is:
the government has grossly underestimated the extent of the problem
regard (someone) as less capable than they really are:
he had underestimated the new President
an estimate that is too low:
£7.5 million is a considerable underestimate