1. (noun) the time at which something is supposed to begin

• beginning
• commencement
• first
• get-go
• kickoff
• offset
• outset
• showtime
• start

1. (noun) the time at which something is supposed to begin

• birth
• incipience
• incipiency
• starting point
• terminus a quo
• threshold

1. (noun) the time at which something is supposed to begin

• point
• point in time

1. (noun) the time at which something is supposed to begin

• begin
• commence
• get
• get down
• set about
• set out
• start
• start out
• begin
• commence
• lead off
• start
• begin
• start
• commence
• embark on
• start
• start up
• inaugurate
• kick off
• initiate
• originate
• start
• start
• take up

1. (noun) the time at which something is supposed to begin

• end
• ending
• middle