Philippic definition

Latin philippicus, from Greek φιλιππικος, from Φιλιππος, literally ‘lover of horses’, from φιλο- + ίππος ‘horse’.

any of the discourses of Demosthenes against Philip of Macedon, defending the liberty of Athens
any tirade or declamation full of bitter condemnation
- 1922: Skin-the-Goat, assuming he was he, evidently with an axe to grind, was airing his grievances in a forcible-feeble philippic anent the natural resources of Ireland, or something of that sort, which he described in his lengthy dissertation as the richest country bar none on the face of God’s earth, far and away superior to England — James Joyce, Ulysses