underestimate

Noun

• an estimation that is too low; an estimate that is less than the true or actual value

Verb

• make too low an estimate of
  • he underestimated the work that went into the renovation
    
  • Don't underestimate the danger of such a raft trip on this river
    

• make a deliberately low estimate
  • The construction company wanted the contract badly and lowballed
    

• assign too low a value to
  • Don't underestimate the value of this heirloom-you may sell it at a good price
    

Related words

• Synonyms: 
  underestimation , underrating , underreckoning , underrate , lowball , undervalue
• Antonyms: 
  overestimate , overrate , overvalue