
1) Effete 2) Futile 3) Idle 4) Impotent 5) Incompetent 6) Ineffective 7) Inefficacious 8) Inefficient 9) Lame 10) Namby pamby 11) Powerless 12) Puny 13) Unavailing 14) Unefectual 15) Uneffective 16) Useless 17) Weak 18) Weakened 19) Wishy-washy
Found on
https://www.crosswordclues.com/clue/ineffectual

1) Futile 2) Impotent 3) Ineffective 4) Not effectual 5) Powerless 6) Producing no result or effect 7) Unavailing 8) Uneffective
Found on
https://www.crosswordclues.com/clue/ineffectual

• (a.) Not producing the proper effect; without effect; inefficient; weak; useless; futile; unavailing; as, an ineffectual attempt; an ineffectual expedient.
Found on
http://thinkexist.com/dictionary/meaning/ineffectual/

Not producing the proper effect; without effect; inefficient; weak; useless; futile; unavailing; as, an ineffectual attempt; an ineffectual expedient. 'The peony root has been much commended, . . . And yet has been by many found ineffectual.' (Boyle) ... Synonym: Inefficient, useless, inefficacious, vain, fruitless, unavailing, futile. See Uselesss...
Found on
http://www.encyclo.co.uk/local/20973
In`ef·fec'tu·al adjective Not producing the proper effect; without effect; inefficient; weak; useless; futile; unavailing; as, an
ineffectual attempt; an
ineffectual expedient.
Pope. « The peony root has been much commended, . . . and yet has been by many found
ineffect...Found on
http://www.encyclo.co.uk/webster/I/49

[
adj] - not sufficient to produce a desired result
Found on
http://www.webdictionary.co.uk/definition.php?query=ineffectual

lacking in power or forcefulness
Found on
https://www.vocabulary.com/lists/153883
No exact match found.