substantial

substantial

CEFR: B1-B2 /sub-stan-tial/ [s.ah0.b.s.t.ae1.n.sh.ah0.l]

Something substantial is large in size, number, or amount: If you want to say someone spent a lot of money without being too specific, you could say they spent a substantial amount of money. It is used as a way to be vague about just how large something is.

Example Sentences:
A substantial number of people commute to work each day.
This will save us a substantial (meaning considerable) amount of money/time.
Activities like that pose a substantial risk of injury.
She purchased her tickets at a substantial discount.
Radio astronomy has led to substantial increases in astronomical knowledge.
There is substantial evidence that certain forms of solar energy either now or within a few years will be economically competitive with conventional sources of heat and power.