malapropos

adjectives

of an inappropriate or incorrectly applied nature
malapropos
antonym
apropos
is similar to
of an inappropriate or misapplied nature
inapposite, out of place
see also
not suitable for a particular occasion etc
"noise seems inappropriate at a time of sadness"; "inappropriate shoes for a walk on the beach"; "put inappropriate pressure on them"
inappropriate
is an attribute of
the quality of being specially suitable
appropriateness

adverbs

at an inconvenient time
"he arrived inopportunely just as we sat down for dinner"; "she answered malapropos"
inopportunely, malapropos