plural of using

The state or quality of being or belonging to a cohesive group of people, especially a group that includes the speaker.

Contraction of us is.

(informal) United States dollar

plural of U

Bad, cruel or unkind treatment.

To treat someone badly, cruelly or unkindly.

(US) The semi-official use of a drug that has not yet gained official approval in cases where no other treatment is possible

Worn out; depleted; exhausted; having nothing left; useless, due to the expenditure of all resources.

simple past tense and past participle of use up