1. (

• undervalue ,
• underestimate ,

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

2. (

• undervalue ,

) esteem lightly ;

3. (

• depreciate ,
• undervalue ,
• devaluate ,
• devalue ,

) lose in value; "The dollar depreciated again" ;