Words similar to valid

Example sentences for: valid

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

All of the hijackers opened accounts in their own name, and used passports and other identification documents that appeared valid on their face.
But in a way, being able to profit from valid criticism is more important than being a master of policy detail.
The criticism is nonetheless valid, though this rejected phrase might come again into play where some sort of life, as after brain death , is prolonged by totally artificial means.
Case studies such as these are well accepted as a valid way of amplifying a more systematic presentation via the realism and vividness of anecdotal information.
But it's not clear that any science is so pure that it's exempt from committee decisions about what's to be considered valid research.