何なんでもあり

expression, noun which may take the genitive case particle 'no'

anything goes; no holds barred; no limits

Describes a situation, rule set, or person's attitude where there are no restrictions and anything is allowed.

• このゲームは本ほん当とうに何なんでもありだ。

  In this game, anything really goes.

• 彼かれの議ぎ論ろんは何なんでもありで、説せっ得とく力りょくがない。

  His arguments are all over the place and not convincing.