<p><strong>Noun (Slang):</strong></p><ul><li>the act or practice of following someone persistently or stealthily, especially online (e.g., Twitter and LinkedIn creeping is a normal part of my day)</li></ul><p><strong>Adjective:</strong></p><ul><li>advancing or developing gradually so as to infringe on or supplant something else (e.g., creeping inflation; creeping socialism)</li></ul>