ad-lib
aimless
amorphous
capricious
casual
caught napping
caught off balance
caught short
desultory
disarticulated
discontinuous
disjunct
disordered
dispersed
disproportionate
erratic
extemporaneous
extemporized
fitful
formless
frivolous
gratuitous
haphazard
hasty
hit-or-miss
immethodical
impromptu
improvised
inchoate
incoherent
indiscriminate
irregular
makeshift
meaningless
misshapen
nonsymmetrical
nonsystematic
nonuniform
orderless
planless
precipitate
promiscuous
random
rough-and-ready
senseless
shapeless
snap
spasmodic
sporadic
straggling
Miao
awesomest
cussing
demotic
eridanian
fifty-percent
fouler
gaudier
gestural
latinised
magniloquent
one-word
panegyrical
posteriori
produced
r-rated
revivalist
sapper
sign-language
sociopolitical
stockyard
unperformed
untranslated
value-laden