perplex
Cross references: 1. puzzle per.plex \p*r-'pleks\ vt [obs. perplex, adj., involved, perplexed, fr. L perplexus, fr. p]er- thoroughly + plexus involved, fr. pp. of plectere to braid, twine - more at PER-, PLY 1: to disturb mentally; esp : CONFUSE, BEWILDER 2: to make intricate or involved : COMPLICATE