1. to measure incorrectly or inaccurately
2. to assess or evaluate someone or something incorrectly

Examples

• The carpenter mismeasured the wood, cutting it two inches too short.
• Critics argued that the study mismeasured the true impact of the policy.
• If you mismeasure the ingredients, the recipe may not turn out well.
• The coach mismeasured his team's ability and scheduled overly difficult opponents.
• The surveyor mismeasured the property line, causing a boundary dispute.
• Don't mismeasure the fabric; take your time with the tape measure.