first

How to sign: preceding all others in time or space or degree
"the first house on the right"; "the first day of spring"; "his first political race"; "her first baby"; "the first time"; "the first meetings of the new party"; "the first phase of his training";

See also: early, front, primary, original

first

How to sign: the time at which something is supposed to begin
"they got an early start"; "she knew from the get-go that he was the man for her";

Similiar / Same: commencement, outset, get-go, starting time, showtime, offset, beginning, start, kickoff

Categories: point, point in time

Within this category: birth, incipiency, terminus a quo, threshold

first

How to sign: before anything else
"first we must consider the garter snake";

Similiar / Same: firstly, first of all, first off, foremost