疑ぎ問もん符ふが付つく

expression, godan verb (-ku)

the question remains; it comes into question

Used when something is questionable or its validity is in doubt. Often appears in the form 疑問符がつく.

• 彼かれの説せつ明めいには疑ぎ問もん符ふがつく。

  His explanation is questionable.

• その計けい画かくの実じつ現げん性せいには疑ぎ問もん符ふがつく。