考かんがえ物もの

noun

something that needs careful thought; something questionable

Used when a matter requires careful consideration or when its appropriateness is in doubt. Often appears in phrases like 考え物だ.

• その計けい画かくは本ほん当とうに考かんがえ物ものだ。

  That plan really needs careful thought.

• 安あん易いに引ひき受うけるのは考かんがえ物ものです。

  Accepting it too easily is questionable.

noun

puzzle; riddle

Less common; refers to a brain-teaser or conundrum. Often replaced by パズル or なぞなぞ in modern speech.

• この考かんがえ物ものはなかなか解とけない。

  This puzzle is quite hard to solve.