ultra-leftEnglishOxford Dictionary of Englishultra-left ▸ (the ultra-left) noun the extreme left wing of a political group or of the political spectrum: it's true that the ultra-left of the party is grumbling over his selection. ▸ adjective belonging to or representing the views of the extreme left wing of a political group or of the political spectrum: the group's tactics appear to be inspired by ultra-left militants in Europe.