digressive
extraneous
immaterial
impertinent
inapplicable
moot
orthogonal
tangential
unsuitable
adrift
alien
back-burner
beside the mark
beside the point
beside the question
dinky
dispensable
extrinsic
foreign
gratuitous
ill-adapted
ill-assorted
ill-chosen
ill-considered
ill-fitted
ill-matched
ill-seasoned
ill-sorted
ill-suited
ill-timed
illogical
improper
inadmissible
inapposite
inappreciable
inappropriate
inapt
inauspicious
incidental
inconsequent
inconsequential
inconsiderable
inconvenient
inept
inessential
inexpedient
infelicitous
inferior
inopportune
insignificant
Embarrass
absurd
erroneous
frivolous
inadequate
inconsistent
mislead
pointless
superfluous
trivial
unable
unintelligible
unnecessary
unreal
untrue
relevant
relative