  We consider axisymmetric, swirl-free solutions of the Euler equations in
three and higher dimensions, of generalized
anti-parallel-vortex-tube-pair-type: the initial scalar vorticity has a sign in
the half-space, is odd under reflection across the plane, is bounded and decays
sufficiently rapidly at the axis and at spatial infinity. We prove lower bounds
on the growth of such solutions in all dimensions, improving a lower bound
proved by Choi and Jeong arXiv:2110.09079 in three dimensions.
