without company; solitary

the initial item in a sequence or series.

referring to one different from the one previously mentioned or considered

each and every one; one by one

the next one

referring to one and the same person or entity, used to express identity or lack thereof.

performing an action persistently, incessantly, or without interruption

the same; of the same type

Down-to-earth, dependable, and earnest in one's character or work style.

it is difficult to achieve anything alone or without the support and cooperation of others

each person has their own specific position or job with no redundancy; one-to-one allocation of personnel to tasks

the phenomenon where every leader or manager establishes their own specific sets of regulations or commands

the wisdom of the masses exceeds that of any individual, even a genius

the previous one

any one of (a list of possibilities)

One world - one dream, motto of 2008 Beijing Olympic games

which; which one

how can it be expressed in one word, "sorrow"?; how can words express such sadness? (originally the last line of the poem "Sheng Sheng Man" by Song poet Li Qingzhao)

next one (in order)

one after another; in succession

to live very far apart from each other

(coll.) to feel as though one's head could explode; to be overwhelmed by problems

one by one; one after another

to change from day to day

honest and trustworthy

the one-China policy

three women make a crowd

lit. three ignorant cobblers add up to a genius; fig. collective wisdom