superadd

verb

1. (transitive)To add on top of a previous addition.

   “To our antiquarian interest in poor Jocelin and his Convent, where the whole aspect of existence, the whole dialect, of thought, of speech, of activity, is so obsolete, strange, long-vanished, there now superadds itself a mild glow of human interest for Abbot Samson […]”

   “Locke's claim that God may superadd to matter a faculty of thinking allows us to usefully relabel our problem[…]”