From WordNet (r) 3.0 (2006):
eternal
adj 1: continuing forever or indefinitely; "the ageless themes
of love and revenge"; "eternal truths"; "life
everlasting"; "hell's perpetual fires"; "the unending
bliss of heaven" [syn: ageless, aeonian, eonian,
eternal, everlasting, perpetual, unending,
unceasing]
2: tiresomely long; seemingly without end; "endless debates";
"an endless conversation"; "the wait seemed eternal";
"eternal quarreling"; "an interminable sermon" [syn:
endless, eternal, interminable]