eterne

[ih-turn] /ɪˈtɜrn/
adjective, Archaic.
1.
Origin
1325-75; Middle English < Latin aeternus, contraction of aeviternus, equivalent to aev(um) age + -i- -i- + -ternus, extended form of -ernus suffix of temporal adjectives
British Dictionary definitions for eterne

eterne

/ɪˈtɜːn/
adjective
1.
an archaic or poetic word for eternal
Word Origin
C14: from Old French, from Latin aeternus