ADJ

considerable, generous, good, handsome, hefty, high, large, not inconsiderable, princely (ironic) , significant, substantial, tidy (informal)
It seemed an absurdly high sum to pay for a coat. For his first book he received the princely sum of $400. The team has raised substantial sums for local charities
astronomical, colossal, enormous, exorbitant, huge, magnificent, massive, record, staggering, vast £
200 was an astronomical sum of money in 1547. He joined the club two years ago for a record sum
five-figure, six-figure, etc.
small, modest, nominal, reasonable, token, trifling
The charity pays a nominal sum to lease the premises
derisory, paltry
average
net
round
$10,000 is a good round sum
full, overall, total
agreed, fixed
undisclosed, unspecified
annual, monthly, etc.
regular
guaranteed
capital, cash, lump
My wife would receive a guaranteed lump sum in the event of my death
tax-free

VERB + SUM

borrow, earn, fetch, raise, recover
Some of the paintings should fetch a tidy sum at today's auction. You will have to go to court to recover these sums
get, receive
award sb, contribute, give sb, grant sb, lend sb, offer sb, pay (sb), repay
The judge awarded them an undisclosed six-figure sum in damages
invest, spend
cost
a project that cost vast sums of public money
charge (sb), fine sb
agree (on)
We eventually agreed a sum and I gave him a cheque

SUM + VERB

be due, be payable
The landlord has the right to recover any sums payable under this lease
be equal/equivalent to sth
The gangsters offered him a sum equivalent to a whole year's earnings
exceed sth

PHRASES

a sum of money

ADJ

difficult, easy

VERB + SUM

do, find the answer to
I did a quick sum to work out how much it would cost

PHRASES

get your sums right/wrong
The company got its sums wrong when estimating how many customers it would attract

VERB + SUM

calculate, find, work out
Calculate the sum of the following figures

PREP

~ of
The sum of two and five is seven