Another word for "lack of interest" is apathy or indifference. These both basically refer to a person who is uninterested, unresponsive or impassive. Another word to describe this sort of person could also be perfunctory.
incommunicado
lacking skill
Harsh truth
Another word for want is long. You can also go to www.thesaurus.reference.com for other synonyms.
be without
Another word for "lack of interest" is apathy or indifference. These both basically refer to a person who is uninterested, unresponsive or impassive. Another word to describe this sort of person could also be perfunctory.
Lack, want,
incommunicado
lack dearth
lethargic
lacking skill
Harsh truth
Lazyness
to lack to deprive to sacrifice
Yes, the word 'failure' is a noun; a singular, common, abstract noun; a word for a lack of success; the omission of expected or required action; a person or thing that does not perform; a word for a concept.
Irresponsibility describes a lack of responsible action.