British spelling of exteriorize; to make external, visible, or manifest; to bring something from inside to the outside.
From exterior + -ize (verb-forming suffix from Greek -izein). The British -ise spelling variant reflects British preference for -ise over -ize in many verbs.
British psychologists use 'exteriorise' when discussing how people project internal emotions outward—it's particularly common in therapy contexts when discussing projection and defense mechanisms.
Complete word intelligence in one call. Free tier — 50 lookups/day.