ineffective; incompetent; futile

feckless attempts to repair the plumbing.

having no sense of responsibility; indifferent; lazy.

adjective

competent , effective , effectual , efficient , purposeful , responsible , strong , useful

adjective

aimless , carefree , careless , feeble , fustian , futile , good-for-nothing * , hopeless , incautious , incompetent , ineffective , ineffectual , irresponsible , meaningless , reckless , shiftless , uncareful , useless , weak , wild , worthlessnotes:feckless means ineffective or having no real worth or purpose; reckless means marked by unthinking boldness or with defiant disregard for danger or consequences , heedless , inattentive , thoughtless , unconcerned , unmindful , unthinking , purposeless , remiss , slack , unreliable , worthless