Proto-Altaic: *ki̯ū̀ta ( ~ -t`-)
Meaning: insufficiency, debt
Russian meaning: недостаточность, долг
Comments: The basic meaning of the root may be formulated as 'having not enough, insufficience' - whence 'debt', 'miser', 'beggar' etc. A Mongolian match is perhaps *kudal 'lie, liar' ( < 'beggar'?).