ETYM Old Eng. summe, somme, Old Fren. sume, some, French somme, Latin summa, from summus highest, a superlative from sub under. Related to Sub-, Supreme.
(Homonym: some).
1. A quantity obtained by addition; SYN. amount, total.
2. A quantity of money; SYN. sum of money, amount, amount of money.
3. The final aggregate; SYN. sum total.
4. The whole; SYN. total, totality, aggregate.

1. To calculate the sum of; total
2. Summarize
3. To reach a sum; amount