flat-footed
napping
off her guard
off his guard
off one's guard
off your guard
off-guard
unripe
ad-lib
airy
arrested
asleep
awkward
back
backward
behindhand
belated
blocked
careless
casual
caught napping
caught off balance
caught short
clumsy
cursory
degage
delayed
delayed-action
detained
disregardant
disregardful
easygoing
extemporaneous
extemporized
flippant
forgetful
free and easy
goofing off
haphazard
hasty
heedless
held up
hung up
ill-considered
ill-seasoned
ill-timed
impromptu
improper
improvised
in a bind
in abeyance
inappropriate
inauspicious
incautious
inconsiderate
inconvenient
indifferent
inexpectant
altered
averse
colicky
hard
ill-fed
impecunious
inapt
inconclusive
inconsecutive
inequitable
inexpressive
inoperative
soft-eyed
unable
uncomprehending
uncourtly
unentertaining
unfitted
uninterested
unmoral
unobservant
unpleasurable
unprepared
unresponsive