Synonyms of effectual
1 effectiveDictionary • the most effectual means of preserving peace
effective • Antibiotics are effective against this organism.
successful • One of the keys to successful business is careful planning.
efficient • an efficient form of contraception
powerful • a powerful drama about a corrupt city leader
useful • The police gained useful information about the organisation.
helpful • The catalogue includes helpful information.
productive • a productive relationship
potent • a potent electoral message
constructive • Both men described the talks as frank, friendly and constructive.
telling • How a man shaves is a telling clue to his age.
fruitful • We had a long, fruitful relationship.
advantageous • Free exchange of goods was advantageous to all.
forcible • He is a forcible advocate for the arts.
serviceable • His Arabic was serviceable enough.
efficacious • The nasal spray was new on the market and highly efficacious.
2 bindingDictionary • an act effectual by law
legal • What I did was perfectly legal.
valid • For foreign holidays you will need a valid passport.
in force • The new tax is already in force.
authoritative • The evidence she uses is highly authoritative.
lawful • lawful for the doctors to treat her in whatever way they considered best
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advantageousIf something is advantageous to you, it is likely to benefit you.
• Free exchange of goods was advantageous to all.
authoritativeSomeone or something that is authoritative has a lot of knowledge of a particular subject.
• The evidence she uses is highly authoritative.
constructiveA constructive discussion, comment, or approach is useful and helpful rather than negative and unhelpful.
• Both men described the talks as frank, friendly and constructive.
Thesaurus for effectual from the Collins English Thesaurus
capable of or successful in producing an intended result; effective