1) Ask too little for 2) Assign too low a value to 3) Esteem lightly 4) Fail to appreciate 5) Hold too low an opinion of 6) Less than the going rate 7) Lose in value 8) Make of less value 9) Miscalculate 10) Misjudge 11) Put too low a value on 12) Take too lightly 13) Think little of 14) To diminish in value 1) Denigrate 2) Depreciate 3) Diminish 4) Knock 5) Misjudge 
• (v. t.) To esteem lightly; to treat as of little worth; to hold in mean estimation; to despise. • (n.) A low rate or price; a price less than the real worth; undervaluation. • (v. t.) To value, rate, or estimate below the real worth; to depreciate.
[v] - assign too low a value to 2. [v] - esteem lightly
to value below the real worth; put too low a value on. · to diminish in value; make of less value. · to have insufficient regard or esteem for; hold too low an opinion of.