Why was "tantrum" trending last week?
1570s, "affecting inward feelings," from Middle French viscéral, from Medieval Latin visceralis "internal," from Latin viscera, plural of viscus "internal organ," of unknown origin. The bowels were regarded as the seat of emotion. The figurative sense vanished after 1640 and the literal sense is first recorded in 1794. The figurative sense was revived 1940s in arts criticism.
visceral vis·cer·al (vĭs'ər-əl)
Relating to, situated in, or affecting the viscera.