He followed these hideous crooks down a rabbit hole and ended up forking out a sizeable sum of cash.
The Sun
The insurer has called this sizeable sum the 'pensions mountain'.
The Sun
He inherited a sizeable sum of money, but within three years it had all gone in a gargantuan spending spree.
Times, Sunday Times
This kind of difference compounded over the lifetime of a pension can easily amount to a very sizeable sum.
Times, Sunday Times
He left a sizeable sum to promote bridge for the young.
Times, Sunday Times