(idiomatic) To harm oneself as a result of attempting to harm an adversary.

(idiomatic) Egotistical, believing oneself to be superior to others; preoccupied with one's own work, interests, point of view, etc.

(idiomatic) To lose all of one's money; to go broke; to undergo financial ruin or disaster.

(idiomatic) To operate as effectively as possible.

All opportunities are open to someone; the world is theirs.

Directly in an area of interest or active operations; in the field. / Used other than figuratively or idiomatically: see on, the, ground.

(computing) continuously connected to the Internet e.g. by broadband

(of something said) Softly, so as not to be heard.

Wealth cannot be obtained without some effort; hence currency is not always available for a prospective purchase.

Alternative form of call them as one sees them