19 entries under expression topic. ×

8
out of bounds(adjective, idiom, restricted, prohibited)
6
off limits(adjective, idiom, offensive, permitted)
2
not allowed(idiom, offensive, permitted, prohibited)
2
ruled out(offensive, permitted, prohibited, unthinkable)
1
against the law(adjective, idiom)
1
beyond the pale(idiom, offensive, restricted, permitted)
1
golden apple(idiom, motive)
1
honeyed words(idiom, motive)
1
index expurgatorius(idiom, prohibition)
1
too great(adjective, unreasonable, improper, excessive)
1
under the ban
0
closed down(verb, phrasal verb)
0
closed up(verb, phrasal verb)
0
frowned on(offensive, permitted, prohibited, unthinkable)
0
is prohibited
0
magnetic force(idiom, motive)
0
no no
0
uncalled for(improper, unjust)
0
under embargo
11 years ago|11k views|share |citing 
APASmart Define. (2015). forbidden thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/forbidden/thesaurus/synonyms
ChicagoSmart Define. 2015. "forbidden thesaurus" https://smartdefine.org/forbidden/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, forbidden thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/forbidden/thesaurus/synonyms>.
MLASmart Define. "forbidden thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/forbidden/thesaurus/synonyms>