Word Study
open to question
THESAURUS
open to question
arguable, at issue, confutable, conjectural, contestable, controversial, controvertible, debatable, deniable, disputable, doubtable, doubtful, dubious, dubitable, iffy, in dispute, in doubt, in dubio, in question, mistakable, moot, open to doubt, problematic, questionable, refutable, speculative, suppositional, suspect, suspiciousFor further exploring for "open to question" in Webster Dictionary Online