ノープラン

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

having no plan; acting without a plan; acting impulsively

Wasei-eigo from English 'no plan'. Describes a state or action done without prior planning, often with a casual or spontaneous connotation. Can be used as a noun or with の to modify another noun.

wasei-eigo (Japanese-coined English), from no plan

• 今日きょうはノープランで出でかけた。

  I went out today with no plan.

• ノープランの旅りょ行こうも楽たのしい。

  A trip with no plan is also fun.