forever (suomeksi)

ikuisesti (d: for all time, for all eternity; for an infinite amount of time)
ikiajoiksi (d: for all time, for all eternity; for an infinite amount of time)
ikuisuuden (d: (colloquially) for a very long time / (colloquially) for an excessively long time)
aina (d: (colloquially) constantly or frequently)
ikuisuus (s: extremeley long time)
iäisyys (s: mythical time in the infinite future)