first
noun
the first or highest in an ordering or series
“He wanted to be the first”
Synonymsnumber onethe first element in a countable series
“the first of the month”
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”
the fielding position of the player on a baseball team who is stationed at first of the bases in the infield (counting counterclockwise from home plate)
Synonymsfirst basean honours degree of the highest class
Synonymsfirst-class honours degreethe lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving
adjective
preceding all others in time or space or degree
“the first house on the right”
“the first day of spring”
Oppositeslastindicating the beginning unit in a series
Synonyms1stserving to set in motion
“the magazine's inaugural issue”
“the initiative phase in the negotiations”
serving to begin
“the beginning canto of the poem”
“the first verse”
Synonymsbeginningranking above all others
“was first in her class”
“the foremost figure among marine artists”
highest in pitch or chief among parts or voices or instruments or orchestra sections
“first soprano”
“the first violin section”
Oppositessecond
adverb
before anything else
“first we must consider the garter snake”
the initial time
“when Felix first saw a garter snake”
before another in time, space, or importance
“I was here first”
“let's do this job first”
prominently forward
“he put his best foot foremost”
Synonymsforemost
Source: WordNet 3.1, Princeton University
