No holds barred

Если вы увлекаетесь всякими разными эМэМэями, то смысл этой идиомы вам понятен без подсказки. Все захваты разрешены. Выражаясь языком менее специфическим, все средства хороши. Можете сами судить по примерам:

The negotiations were intense, with both sides coming in with no holds barred, aiming to secure the best deal possible.

The comedian's performance was hilarious, with no holds barred humor that had the audience roaring with laughter.

When it comes to her career, she approaches it with no holds barred, willing to take risks and make sacrifices to succeed.

Действительно, эта идиома пришла из спорта, из борьбы, а впервые, говорят, появилась в печатном виде в феврале 1892 года, когда журналист Manitoba Daily Free Press написал:

Wm. Gibbs, the Kansas man, and Dennis Gallacher, of Buffalo, engaged in a wrestling match at the opera house here tonight. Gibbs was strangled into insensibility and may die. The conditions of the match were best two in three falls Greco-Roman style; no holds barred.

Синонимы:

Anything goes

No restrictions

Unrestricted

Free-for-all

Pulling no punches

Full throttle

Without reservation

Uninhibited

Unrestrained

Unbridled

Unfettered