Wiktionary
inertialess
a. That has no inertia, or acts without the use of inertia
Usage examples of "inertialess".
I was an immense inertialess bullet caroming off the walls of the Universe at translight velocities.
In every arm of the galaxy were Outsiders, using everything from photon sails to reactionless, inertialess drives to push their ships.
In every, arm of the galaxy were Outsiders, using everything from photon sails to reactionless, inertialess drives to push their ships.
They stayed in view of the Roniah multitude for five minutes before going full inertialess and vanishing in a thunderous sonic boom.