questionable

Adjective

questionable (comparative more questionable, superlative most questionable)

1. Problematic; open to doubt or challenge.
   • It is questionable if the universe is open or closed.
   • A crude, cold rain was falling heavily; the spring-time presented itself as a questionable improvement.1881, Henry James, Jr., chapter 3, in The Portrait of a Lady, New York, N.Y.: Houghton, Mifflin and Company […], →OCLC, page 28
2. Of dubious respectability or morality.
   • […] he had a love of money—a sort of acquisitiveness, that led him into questionable dealings.1920, Carolyn Wells, chapter 18, in Raspberry Jam, Philadelphia: J.B. Lippincott, page 302
   • Obviously modeled after Ren & Stimpy, it's about a wallaby and his flatulent dog. While some of the humor is pretty funny, some of it is questionable.1995, Randy Pitman (publisher), “Some Extra Children's Videos”, in The Video Librarian, volumes 10-11, page 3
3. (obsolete) Inviting questions; inviting inquiry.
   • Thou com'ſt in ſuch a queſtionable ſhape / That I will ſpeake to thee.c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac...