is similar to
seemingly boundless in amount, number, degree, or especially extent
"unbounded enthusiasm"; "children with boundless energy"; "a limitless supply of money"
is similar to
having no known beginning and presumably no end
"the dateless rise and fall of the tides"; "time is endless"; "sempiternal truth"
is similar to
infinitely great in number
"endless waves"
is similar to
that cannot be entirely consumed or used up
"an inexhaustible supply of coal"
see also
not subject to death