Englishfor English speakers
non
Prefix
—
non or non- means the same as not, but makes not part of the word it changes. When you add non- to a word it makes that word mean the opposite.
That drink is non-alcoholic, it has no alcohol in it.
He is a non-believer; he does not believe at all.
substantial
Adjective
—
If something is substantial, it is not small.
The children spent a substantial portion of the day in free play or unstructured time.
The company needs to make substantial reductions in spending.
After the accident, he lost a substantial amount of blood.
Changing the light bulbs might translate into very substantial energy savings.
Soft background music results in substantial improvement in reading comprehension.
We found no substantial evidence supporting these beliefs.
China has a substantial impact on the global economy.
That will help, but I'm not sure it will make a substantial difference.
They would likely benefit from a substantial decline in home prices.
Such a program will require substantial resources to develop and maintain.