adolescent
aged
ageless
ancient
behindhand
brief
brisk
delayed
early
elderly
eternal
fast
first
fleet
future
futuristic
ill-timed
irregular
juvenile
late
long
modern
new
old
old-fashioned
oldish
overage
premature
punctual
quick
rapid
regular
senile
short
slow
speedy
swift
tardy
teenage
traditional
underage
unearthly
waiting
young
youthful