unallowable (adjective) inadmissible: not appropriate
Sinonime: exceptionable, ill-favored, ill-timed, immaterial,
improper,
inappropriate, inapt,
incompetent,
inept,
irrelevant, malapropos, objectionable,
unacceptable, unallowable, unbecoming,
undesirable, unfit, unqualified,
unreasonable,
unsatisfactory, unseemly, unsuited,
unwanted, unwelcome
Antonime: acceptable, admissible, allowable,
appropriate