| noun | 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” |
| noun | a single person or thing “he is the best one” |
| adjective | used of a single unit or thing; not two or more “`ane' is Scottish” |
| adjective | having the indivisible character of a unit “a unitary action” |
| adjective | of the same kind or quality “two animals of one species” |
| adjective | used informally as an intensifier “that is one fine dog” |
| adjective | indefinite in time or position “he will come one day” |
| adjective | being a single entity made by combining separate components “three chemicals combining into one solution” |
| adjective | eminent beyond or above comparison “matchless beauty” |
| oneness | noun | the quality of being united into one |