During sequentially discrete instances.

in close confrontation

A head-on conflict or direct competition.

Characterized by head-to-head competition or conflict.

In a single, continuous period of time. / Simultaneously at each occurrence (of some action).

(dated, informal) The United States of America.

Alternative spelling of U.S. of A.

(informal) To complain; to demand attention or remedy for a problem.

(idiomatic) To create a predicament or problem for oneself; to do something that leaves one with no good alternatives or solutions.

(idiomatic) Under very unlikely circumstances; probably never.