deprecating (Adjective) — Tending to diminish or disparage. ex. "managed a deprecating smile at the compliment"
deprecating (Verb) — Express strong disapproval of; deplore.
deprecating (Verb) — Belittle. ex. "The teacher should not deprecate his student's efforts"
deprecating (Verb) — (computing) declare something obsolescent; recommend against a function, technique, command, etc, that still works but has been replaced and may not work in future.