inopportune
ahead of time
anachronistic
antedated
bad
beforehand
behind time
behindhand
dated
deplorable
early
foredated
futile
ill-adapted
ill-advised
ill-assorted
ill-chosen
ill-considered
ill-fitted
ill-matched
ill-seasoned
ill-sorted
ill-suited
ill-timed
impolitic
improper
inadmissible
inadvisable
inapplicable
inapposite
inappropriate
inapt
inauspicious
incongruous
inconvenient
inept
inexpedient
infelicitous
intempestive
intrusive
irrelevant
late
mal a propos
maladjusted
malapropos
metachronistic
misdated
misjoined
mismatched
ill-judged
imprudent
indecorous
indelicate
indiscreet
injudicious
injurious
inordinate
rainy
thoughtless
unbecoming
undue
unlooked-for
unmanly
unseemly
untimely
unwarrantable
unwelcome
unwonted
vexatious
seasonable