"he has the one but will need a two and three to go with it"
"they had lunch at one"

"he is the best one"
"this is the one I ordered"

"`ane' is Scottish"

"a unitary action"
"spoke with one voice"

"two animals of one species"

"that is one fine dog"

"he will come one day"
"one place or another"

"three chemicals combining into one solution"

"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"