likely to last for a long time

sturdy, long-lasting

without beginning or end; lasting for ever

without pause; endless

going on for ever

infinite, never-ending

living for ever; never forgotten

death-defying, imperishable

endless; without limits; that cannot be measured, calculated, or imagined

limitless, without end

continuing for a long time

enduring, unending

continuing throughout the whole year; lasting for a very long time; living for more than two years

enduring, perpetual

not expected to change; going on for a long time; intended to last

constant, lasting

going on for a long time or without stopping

continual, lasting

firm; not likely to move or change; a building in which horses are kept and fed; a number of horses (especially racehorses) belonging to one particular owner

constant, fixed; resistant

that cannot be broken

strong, tough