important
lively
of import
active
bustling
busy
consequential
exciting
full
full of incident
interesting
memorable
momentous
notable
noteworthy
phenomenal
signal
significant
stirring
adventurous
arduous
auspicious
disastrous
enjoyable
fateful
lengthy
long-ago
perilous
previous
rainy
stormy
toilsome
tumultuous
uneventful
unsuccessful
upcoming
resentful