first
first
adjective
Coming before all others in order, time, rank, or importance.
"This is my first time visiting London."
noun
The person or thing that comes before all others in a sequence.
"He was the first to volunteer."
adverb
Before any other person or thing; initially; for the very first occasion.
"She arrived first at the finish line."
Thesaurus
Synonyms: firstly, first of all, foremost, first off, first-class honours degree, number 1, number one, commencement, beginning, start, showtime, outset