  The nearby, luminous infrared galaxy (LIRG) NGC 7469 hosts a Seyfert nucleus
with a circumnuclear star-forming ring and is thus the ideal local laboratory
for investigating the starburst--AGN connection in detail. We present
integral-field observations of the central 1.3 kpc region in NGC 7469 obtained
with the JWST Mid-InfraRed Instrument. Molecular and ionized gas distributions
and kinematics at a resolution of {\sim}100 pc over the 4.9 - 7.6{\mu}m region
are examined to study gas dynamics influenced by the central AGN. The
low-ionization [Fe II] {\lambda}5.34{\mu}m and [Ar II] {\lambda}6.99{\mu}m
lines are bright on the nucleus and in the starburst ring, as opposed to H2
S(5) {\lambda}6.91{\mu}m which is strongly peaked at the center and surrounding
ISM. The high-ionization [Mg V] line is resolved and shows a broad, blueshifted
component associated with the outflow. It has a nearly face-on geometry that is
strongly peaked on the nucleus, where it reaches a maximum velocity of -650
km/s, and extends about 400 pc to the East. Regions of enhanced velocity
dispersion in H2 and [Fe II] {\sim}180 pc from the AGN that also show high
L(H2)/L(PAH) and L([Fe II])/L(Pf{\alpha}) ratios to the W and N of the nucleus
pinpoint regions where the ionized outflow is depositing energy, via shocks,
into the dense interstellar medium between the nucleus and the starburst ring.
These resolved mid-infrared observations of the nuclear gas dynamics
demonstrate the power of JWST and its high-sensitivity integral-field
spectroscopic capability to resolve feedback processes around supermassive
black holes in the dusty cores of nearby LIRGs.
