to not know in any manner —

 being invisible to all —

hidden/concealed —

hiding inside in such a way that even those pervaded objects do not know his existence —

hiding (inside his stomach) —

eating and hiding (inside the stomach) —

(during samhāram (deluge), conceal as said in -thama: ĕkībhavathi #(everything becomes merged into primordial matter)) —

concealing (so the worlds can be protected from pral̤ayam (deluge)) —

changed (by eliminating the scent) —

changing —

hiding inside —

being beyond sense perception (to not take aim at) —

(for the non-devotees) not shining —