verb

1. To belittle or express disapproval of.

   “He deprecates any praise of his own merits.”

2. To declare something obsolescent; to recommend against a function, technique, command, etc. that still works but has been replaced.

   “It is still supported but strongly deprecated.”

3. To pray against.

adjective

1. Strongly disapproved of.

2. Belittled; insulted.

3. Said of a function or feature planned to be phased out, but still available for use.

   “Foo() has been deprecated; it outputs a debug message and then calls Foo2()”

Synonyms: obsolescent, on its way out