23. one united in thought or feeling; attuned: to feel at one with the world.
24. one for one, as an illustrative instance; for example: I, for one, refuse to go along.
25. one one and all, everyone.
26. one one by one, singly and successively.
Etymology: (bef. 900; ME oon, OE ān; c. OFris ān, ēn, OHG, G ein, ON einn, L unus one, Gk oínē ace on a die)
Definition of 'one'
Princeton's WordNet
1. (noun)one, 1, I, ace, single, unity the smallest wholenumber 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"
2. (adj)one a singleperson or thing "he is the best one"; "this is the one I ordered"
3. (adj)one, 1, i, ane used of a singleunit or thing; not two or more "`ane' is Scottish"
4. (adj)one(a), unitary having the indivisible character of a unit "a unitary action"; "spoke with one voice"
5. (adj)one(a) of the samekind or quality "two animals of one species"
6. (adj)one(a) used informally as an intensifier "that is one fine dog"
7. (adj)one(a) indefinite in time or position "he will come one day"; "one place or another"
8. (adj)one being a singleentity made by combining separate components "three chemicals combining into one solution"
9. (adj)matchless, nonpareil, one(a), one and only(a), 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"
2. (determiner)one indicates a particularperson or thing One solution is to invite all of them.; One of my friends had a car accident last weekend.
3. one indicates a particulartime We should go out for a drink one night.; I was bored one day and decided I needed to travel.
4. one only Women are his one weakness.; The weather is the one thing I don't like about living here.
5. one the one emphasizes an adjective That's one beautiful horse.
6. one one at a time no more than one at the same time Place them carefully in the box one at a time.
7. one one by one separately, one after the other One by one they left the room.
8. (pronoun)one indicates a particularperson or thing that has been mentioned I'm getting an ice cream cone. Do you want one?; There are so many people. Which one is he?; How can they afford it? They're the ones with no money.; You're the one who told everybody the secret.
9. one the one/ones indicates people in general One should exercise regularly.