一致

in a short while

all at once

all of a sudden

generation

in a word

in short

in case (sth happens)

if

once (sth happens, then...)

when

in a short time

in one day

one-off (offer)

one-time

single-use

disposable (goods)

the whole journey

all the way

going the same way

going in the same direction

of the same kind