to fail to perform a duty, to appear (e.g. in a law court) or to a debt

failure; want

a fault; something that is not complete or perfect

blemish, imperfection

(an instance of) the state of being short of, less than, what is correct or needed

imperfection, inadequacy

an amount by which something, especially a sum of money, is too small

shortage of something needed, required

something which lessens one's satisfaction or makes progress or success less easy

disadvantage

a slight peculiarity or defect of character, often one of which a person is wrongly proud

personal imperfection

the quality of being frail; a moral fault

weakness, flaw

(a competition, race, in which there is) a disadvantage imposed on a competitor to make the chances of success more equal for all; anything likely to lessen one's chances of success

disadvantage

an absence of balance between two quantities or totals

lack of balance

the state of being imperfect; a fault (the usual word)

flaw

the lack of power or means

disabling lack of talent, skill

weakness, sickness

weakness, sickness

an absence of or need for (something)

deficiency, need

deficiency, need

deficiency, need

an amount by which a supply etc is not enough

deficit; imperfection

(an example of) breaking God's laws (pride, jealousy, lust, anger, greed, envy, laziness) , behaviour that is against the principles of morality; do wrong

illegal or immoral action