sennight
has been listed 6 times with 1 comment
annum
has been listed 1 time with 0 comments
lustrum
has been listed 8 times with 0 comments
term
has been listed 8 times with 0 comments
period
has been listed 6 times with 1 comment
semester
has been listed 3 times with 0 comments
season
has been listed 7 times with 0 comments
epoch
has been listed 26 times with 0 comments
era
has been listed 10 times with 5 comments
eon
has been listed 8 times with 0 comments
generation
has been listed 7 times with 4 comments
olympiad
has been listed 2 times with 0 comments
fortnight
has been listed 24 times with 3 comments
millennium
has been listed 5 times with 0 comments
century
has been listed 12 times with 1 comment
decade
has been listed 6 times with 0 comments
year
has been listed 9 times with 0 comments
month
has been listed 8 times with 2 comments
day
has been listed 8 times with 0 comments
hour
has been listed 6 times with 0 comments
minute
has been listed 17 times with 1 comment
second
has been listed 11 times with 0 comments
The half-as-long counterpart to the popular fortnight is the sennight.