transient
fleeting; short-lived
influx
a flowing in
anachronism
something out of place in time
fluere
to flow
chronos
time
contemporaneous
existing or occurring at about the same time
interminable
never ending
extemporaneous
done with little or no practice
ephemeral
short-lived
sporadic
irregular or unpredictable; infrequent
transitory
lasting for a short time
capricious
whimsical; impulsive
protracted
prolonged; extended in time
evanescent
likely to vanish
tempus
time
trans
across, through
superfluous
beyond what is necessary or sufficient
expedite
to speed up