Trifling or unimportant
Being a period of time in which there is little or no activity:
Not availing; futile; ineffectual
Not efficacious; unable to produce the desired effect
Not adequate; not sufficient; not equal to what is required
The definition of insufficient is that there is not enough of something.
(Obsolete) Lacking self-restraint.
Not producing the desired effect with a minimum use of energy, time, etc.; ineffective
Lacking in utility or serviceability; not useful.
Without worth or merit; useless, valueless, etc.
The definition of incapable is not having the ability, strength or legal qualification to do something.
Lacking strength or power; helpless and totally ineffectual.
Lacking in strength of body or muscle; not physically strong
(Economics) Adding nothing to exchangeable value.
Not yielding the desired outcome; fruitless:
not producing an intended effect
Having no hope or chance of changing or improving:
Producing a strong impression or response; striking:
Unskilled, lacking normally expected degree of ability.
Not having the desired effect
That has or have previously been owned by someone else.
Not capable of accomplishing anything
Having or showing ability or achievement in a specified field:
Find another word for ineffectual. In this page you can discover 37 synonyms, antonyms, idiomatic expressions, and related words for ineffectual, like: ineffective, useless, futile, effective, incompetent, idle, unavailing, inefficacious, inadequate, insufficient and unable.