All russian adjectives

non-self-propelled

unbalanced

intractable

incompressible

asymmetric

indeclinable

uncourageous

irremovable

uncreasable

ceaseless

indelible

slow-witted

unco-ordinated

dissonant

irreducible

disjointed

slow

incongruous

not corresponding

of low quality

unripe

inconvenient

unstable

of little

unfit for building purposes

unnavigable

dissimilar

tactless

not exacting

disabled

unfading

unfading

inextinguishable

indigestible

unintelligible

unpronounceable

unreadable

unsociable

steadfast

strict and rigorous (archaic)

unfortified

incessant

unwashed

unpremeditated

not in use

outstanding

of bad harvest

restless

disobliging

weak