once upon a time

: one time and no more

: at any one time : under any circumstances : ever

: at some indefinite time in the past : formerly

: one single time : one time at least

: that once was : former

: at the moment when : as soon as

: on

: on the surface : on it

: thereafter, thereon

: the measured or measurable period during which an action, process, or condition exists or continues : duration

: a nonspatial continuum that is measured in terms of events which succeed one another from past through present to future

: leisure

: to arrange or set the time of : schedule

: to regulate (a watch) to keep correct time

: to set the tempo, speed, or duration of

: of or relating to time

: recording time

: timed to ignite or explode at a specific moment