Main Entry: ques·tion·able

Pronunciation: \ˈkwes-chə-nə-bəl, ˈkwesh-, in rapid speech ˈkwesh-nə-\

Function: adjective

Date: 1580

1 obsolete : inviting inquiry
2 obsolete : liable to judicial inquiry or action
3 : affording reason for being doubted, questioned, or challenged : not certain or exact : problematic <milk of questionable purity> <a questionable decision>
4 : attended by well-grounded suspicions of being immoral, crude, false, or unsound : dubious <questionable motives>

synonyms see doubtful

— ques·tion·able·ness noun

— ques·tion·ably \-blē\ adverb