The definition of baneful is harmful or destructive to someone or something.
An example of baneful is a toxic gas that leaks from a factory.
- Causing harm, ruin, or death; harmful. See Usage Note at baleful.
- Portending harm; ominous.
- It tended to destroy the power of self-command, and exposed the master to the baneful influences of flattery.
- Such were some of the methods that Torquemada introduced into the Spanish Inquisition, which was to have so baneful an effect upon the whole country.
- From the authentic report of his cup-bearer Nehemiah we see that he was a kind, good-natured, but rather weak monarch, and he was undoubtedly much under the baneful influence of his mother Amestris (for whose mischievous character cf.
- Moreover, a feeling of revulsion against the Jesuits was sweeping over western Europe: they were accused of being the incarnation of the most baneful principles, political, intellectual, moral; and though Clement (1758-1769) protected them against the pressure of the Bourbon courts, his successor Clement XIV.
- The great defect of both these processes, that they could not remove the baneful phosphorus with which all the ores of iron are associated, was remedied in 1878 by S.