English Dictionary

un-

prefix

Used to form temporary names of elements (such as unbiunium) whose existence has been predicted, and have not yet been given a trivial name. / Used to form large numbers as the first in the sequence.

Unhappy people can still find joy in small moments.

意味（1）

Used to form temporary names of elements (such as unbiunium) whose existence has been predicted, and have not yet been given a trivial name.

意味（2）

Used to form large numbers as the first in the sequence.

undecillion