underestimation
1. [ noun ] (mathematics,psychology) an estimation that is too low; an estimate that is less than the true or actual value
Synonyms: underrating underreckoning underestimate
Related terms: estimate underestimate lowball undervalue
Similar spelling:   underestimate
  underevaluation
  undervaluation
  understatement
  undergarment
  undercurrent
  unidirectional
  undermentioned
  undereducated