Feckless
Part of speech: adjective
Definition: Lacking purpose. Without skill, ineffective, incompetent. Lacking the courage to act in any meaningful way. Lacking vitality.
Irresponsible
Part of speech: noun
Definition: Someone who is not responsible.
Part of speech: adjective
Definition: Lacking a sense of responsibility; incapable of or not chargeable with responsibility; unable to respond to obligation.Not responsible; not subject to responsibility; not to be held accountable, or called into question.
Example sentence: My denial and irresponsible attitude about asthma put me at great risk and caused me so much needless suffering. My hope is that the kids I talk to learn to open up about their asthma, become educated about their condition, and seek help.