Words similar to substantial--

Example sentences for: substantial--

How can you use “substantial--” in a sentence? Here are some example sentences to help you improve your vocabulary:

The Administrator, in reviewing, under subclause (I), any plan withrespect to which emissions from affected units, within the meaning of section 126(d)(1), are substantial--
Sorry I can't give you anything more substantial--I just didn't know Dubya all that well.