Opposite is 内向 (nèixiàng, introverted). Personality-describing use is dominant in everyday speech. The economics sense (外向型经济 'export-oriented economy') is frozen in policy/news language.
memory
Literally 'facing outward' — energy and attention directed toward the outside world. 内向 is 'facing inward.' Matches the Latin root of extro/intro-vert exactly.
