belittle; "The teacher should not deprecate his student's efforts"

belittle, as in : Have you noticed that he seems to deprecate himself just so we have to compliment him

To disapprove of strongly; to express a low opinion of.

express strong disapproval of; deplore

To discourage use of a feature without removing the feature from the product, typically in favor of an alternative. The deprecated feature should no longer be used because it might be removed in a future release.

To discourage use of a feature without removing the feature from the product. When a JavaScript feature is deprecated, an alternative is typically recommended; you should no longer use the deprecated feature because it might be removed in a future release.

To pray against, as an evil; to seek to avert by prayer; to seek deliverance from; to express deep regret for; to desire the removal of.

To protest against; to advance reasons against.