  Spin fluctuations were studied over a wide momentum ($\hbar Q$) and energy
($E$) space in the frustrated $d$-electron heavy-fermion metal LiV$_2$O$_4$ by
time-of-flight inelastic neutron scattering. We observed the overall $Q$$-$$E$
evolutions near the characteristic $Q=0.6$ {\AA}$^{-1}$ peak and found another
weak broad magnetic peak around 2.4 {\AA}$^{-1}$. The data are described by a
simple response function, a highly itinerant magnetic form factor, and
antiferromagnetic short-range spatial correlations, indicating that
heavy-fermion formation is attributable to spin-orbit fluctuations with orbital
hybridization.
