Adjective one has 10 senses
- one, 1, i, ane - used of a single unit or thing; not two or more; "`ane' is Scottish"
Antonym:  ordinal (indirect, via cardinal)
 - one - particular but unspecified; "early one evening"
Antonym:  specified (indirect, via unspecified)
 - one, unitary - having the indivisible character of a unit; "a unitary action"; "spoke with one voice"
Antonym:  divided (indirect, via united)
 - one - of the same kind or quality; "two animals of one species"
Antonym:  different (indirect, via same)
 - one - used informally as an intensifier; "that is one fine dog"
Antonym:  ordinary (indirect, via extraordinary)
 - one - indefinite in time or position; "he will come one day"; "one place or another"
Antonym:  definite (indirect, via indefinite)
 - one - being the single appropriate individual of a kind; only; "the one horse that could win this race"; "the one person I could marry"
Antonym:  multiple (indirect, via single)
 - one - being one in number--a single unit or thing; "one person is going"; "her one thought was to win"; "I'm just one player on the team"; "one day is just like the next"; "seen one horse and you've seen them all"
Antonym:  multiple (indirect, via single)
 - one - being a single entity made by combining separate components; "three chemicals combining into one solution"
Antonym:  uncombined (indirect, via combined)
 - matchless, nonpareil, one, one and only, peerless, unmatched, unmatchable, unrivaled, unrivalled - eminent beyond or above comparison; "matchless beauty"; "the team's nonpareil center fielder"; "she's one girl in a million"; "the one and only Muhammad Ali"; "a peerless scholar"; "infamy unmatched in the Western world"; "wrote with unmatchable clarity"; "unrivaled mastery of her art"
Antonym:  comparable (indirect, via incomparable)
 
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Noun one has 2 senses
- one, 1, I, ace, single, unity - the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch at one"
--1 is a kind of digit, figure
--1 has particulars: monad, monas; singleton
 - one - a single person or thing; "he is the best one"; "this is the one I ordered"
--2 is a kind of unit
 
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