deboost verb 2noun 1forms 3 verb2 •To slow (a spacecraft) by reducing thrust, typically in order to achieve a stable orbit. •(Internet) To limit or suppress the reach of (an account or post).And it was not as though they were unable, as the waves of bannings and algorithmic deboosting of those on the online right began in earnest after 2016. — 2023 noun1 •A slowing manoeuvre of this kind. formsdeboosted · deboosting · deboosts