(idiomatic, informal) No harm to one.

(poker) A style of poker game where bets and raises can be as large as the player is capable of making them.

(idiomatic) Full of big talk but lacking action, power, or substance; pretentious. / (idiomatic) Often making cutting remarks, but having a gentle personality underneath.

(colloquial) An exclamation of amazement. / (colloquial, sarcastic) Said in response to an obvious statement.

ruthlessly aggressive and uncompromising

Alternative spelling of hell no

(idiomatic) Mutual dislike or animosity.

(slang) no problem.

(idiomatic) Without any other formalities; with no further delay.

(wrestling) Without restrictions on holds or what opponents may do.