Synonyms for substantial sum

Synonyms for substantial

significant (meaningful, appreciable, dramatic >>)
considerable
sizeable
large (major, big, real >>)
important
great
strong
hefty
material
much
respectable
thorough

See all synonyms for substantial

Synonyms for sum

amount (total, sum total, aggregate >>)
sum up (summarize, summarise, recap >>)
amount of money
summation
add up

See all synonyms for sum