unexceptionable

unexceptionable /ˌʌnɪkˈsɛpʃənəbəl/ adjective
unexceptionable
/ˌʌnɪkˈsɛpʃənəbəl/
adjective
Britannica Dictionary definition of UNEXCEPTIONABLE
formal
: not likely to cause objection or offense — usually used to describe something that is good but not outstanding or excellent