philippize

from The Century Dictionary.

• To side with Philip of Macedon; support or advocate the cause of Philip.
• To write or utter a philippic or invective; declaim. See Philippic.
• To attack in a philippic; inveigh against.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To support or advocate the cause of Philip of Macedon.
• intransitive verb To write or speak in the style of a philippic.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To support or advocate the cause of Philip of Macedon.
• verb To write or speak in the style of a philippic.