Definition from macmillandictionary.com
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The study reveals very substantial differences between population groups.
The schools have a substantial measure of local autonomy.
A substantial number of members have called to complain.
There has been a substantial increase in inflation.
Unless the group can raise a substantial sum, they will be in trouble.
a substantial brick building
His decision was based on nothing more substantial than his dislike of foreigners.
The most substantial regional newspaper is Caribbean Contact.
Do you have anything more substantial than these pretzels?