| A one |
superior; first-rate; first-class. |
| at one |
in a state of harmony or accord. |
| bite the hand that feeds one |
to respond to kindness or generosity with harm or malice. |
| doubles minus one |
in mathematics education, involving the addition of consecutive numbers by doubling the larger number and subtracting one. |
| doubles plus one |
in mathematics education, involving the addition of consecutive numbers by doubling the smaller number and adding one. |
| have one's wits about one |
to stay alert and watchful. |
| in one ear and out the other |
heard, but with little or no notice paid. |
| keep one's wits about one |
to stay alert and watchful. |
| kill two birds with one stone |
to achieve two aims with one action. |
| no one |
no person; nobody. |
| number one |
(informal) oneself or one's own interests. [2 definitions] |
| one by one |
one at a time; one after another; singly. |
| one for the road |
one last drink, esp. an alcoholic beverage, that is taken before departing. |
| one of a kind |
something or someone with unique, usu. admirable, qualities. |
| one-digit number |
a whole number containing one digit, such as 2. |
| one-horse |
designed for or using only one horse. [2 definitions] |
| one-liner |
a short witty or amusing remark. |
| one-night stand |
an engagement for a single performance in one place by an entertainer, speaker, or the like. [2 definitions] |
| one-on-one |
in certain sports, playing against or covering a single opponent. [3 definitions] |
| one-shot |
a publication, performance, or the like that is intended for one time only. [4 definitions] |