1. [ verb ] esteem lightly
Related terms: disrespect undervaluation
2. [ verb ] assign too low a value to
Synonyms: underestimate

"Don't underestimate the value of this heirloom-you may sell it at a good price"

Related terms: overvalue overvalue value underestimate undervaluation
3. [ verb ] lose in value
Synonyms: devaluate devalue depreciate

"The dollar depreciated again"

Related terms: appreciate decrease depreciate depreciation depreciation devaluation
Similar spelling:   underlie