8.1.1.1.1 One
Use this domain for words related to the number one. It appears that every language has a word for 'one' and 'two', but not every language has a word for the numbers higher than two. Many languages have several words that mean 'one'.
What words refer to one?
one, first, individual, single, only, the one, one apiece, one each,
What words refer to being by yourself?
alone, by yourself, sole,
What words refer to doing something by yourself?
alone, on your own, solo, solely,
What words refer to people doing something one by one?
one by one, singly, individually,
What words indicate that something happens or is done one time?
once, one time, single time, one-off,