Synonyms of the word

feckless

• adj. Lacking purpose.
• adj. Without skill, ineffective, incompetent.
• adj. (Britain) Lacking the courage to act in any meaningful way.
• adj. (Britain, archaic) Lacking vitality.

incompetent

• adj. Unskilled, lacking normally expected degree of ability.
• adj. Unable to make rational decisions, insane or otherwise cognitively impaired.
• adj. (medicine) an incompetent cervix is one that opens too early in pregnancy, provoking the baby to be born.
• n. A person who is incompetent.

inept

• adj. Not able to do something; not proficient; displaying incompetence.
• adj. Unfit; unsuitable.

irresponsible

• adj. Lacking a sense of responsibility; incapable of or not chargeable with responsibility; unable to respond…
• adj. Not responsible; not subject to responsibility; not to be held accountable, or called into question.
• n. Someone who is not responsible.