Word Study
off limits
THESAURUS
off limits
banned, barred, contraband, forbade, forbid, forbidden, illegal, illicit, nonpermissible, not permitted, out of bounds, outlawed, prohibited, restricted, ruled out, taboo, tabooed, unallowed, unauthorized, under the ban, unlawful, unlicensed, unpermissible, unsanctioned, untouchable, verboten, vetoedFor further exploring for "off limits" in Webster Dictionary Online