tolerable

adjectives

capable of being borne or endured
"the climate is at least tolerable"
antonym
is similar to
capable of being borne though unpleasant
"sufferable punishment"
is similar to
able to tolerate environmental conditions or physiological stress
"the plant is tolerant of saltwater"; "these fish are quite tolerant as long as extremes of pH are avoided"; "the new hybrid is more resistant to drought"
see also
that may be permitted especially as according to rule
"permissible behavior in school"; "a permissible tax deduction"
about average; acceptable
"more than adequate as a secretary"