Antonyms for groundlessly

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR GROUNDLESSLY

But all this reasoning is founded in an erroneous, and groundlessly degrading, opinion of human nature.

Spoken of them who groundlessly pretend kindred to great persons.

Some of them go so far as groundlessly to impute sheer hypocrisy to Racine.

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.