Underachieve as a verb is to achieve less than expected; to fail to fulfil one's potential. while Underperform as a verb is to underachieve, to not reach standards or expectations, especially with respect to a financial investment.
Part of speech: verb
Definition: To achieve less than expected; to fail to fulfil one's potential.
Part of speech: verb
Definition: To underachieve, to not reach standards or expectations, especially with respect to a financial investment.
We hope you now know whether to use Underachieve or Underperform in your sentence.