Definition of effectual in English:

effectual

adjective

  • (typically of something inanimate or abstract) successful in producing a desired or intended result; effective.

    ‘tobacco smoke is the most effectual protection against the mosquito’
    • ‘It is true, the Lord can, and I hope He often does, make that preaching effectual to the conversion of sinners, wherein little is said expressly to them, only the truths of the gospel are declared in their hearing’
    • ‘It was a wonder of his grace, that the call was made so effectual.’
    • ‘If this can be done, the rampart which the constitution has built up to secure the hearthstone from rude intrusion, is an effectual defense no longer.’
    • ‘The effectual fervent prayer of a righteous man availeth much.’
    • ‘However, the court may order such particulars as may be necessary to prevent surprise and unnecessary expense and to ensure a fair and effectual trial.’
    effective, successful, efficacious, productive, constructive, fruitful, potent, powerful
    View synonyms

Origin

Late Middle English: from medieval Latin effectualis, from Latin effectus (see effect).

Pronunciation:

effectual

/əˈfek(t)SH(o͞o)əl/