(slang) The wrong way round; exactly opposite to that which is desirable; contrary; conceptually inverted; wrong.

(nautical) Used by the helm announcing to the crew that (s)he is ready to change tack.

To initiate or begin some action. / To attack.

to distribute or circulate something / to spread a rumour / (obsolete) to encompass or surround something

(military) Alternative form of about-face

(military) Alternative form of about-face

(Britain, military) Of a formation of soldiers, to reverse the direction in which they are facing; an about face. / (Britain, figuratively, idiomatic) A complete change of opinion, direction, etc.

(intransitive, military) To turn to face the opposite direction.

(transitive) To busy oneself with. / (intransitive) To tackle (a problem or task). / (intransitive) To circulate (in).

(idiomatic) Traveling; out; moving; engaged in day-to-day activities.