Word Type

Adjective

Adjective

The word "effectual" can be used as adjective and adjective.

Word Relationships

Opposites (Antonyms)

ineffectual

Derived Terms

effectual calling effectuality effectualization effectualize effectually effectualness noneffectual uneffectual

Related Terms

effect effective effectivity efficacious efficacity efficacy efficiency efficient

Related Terms

adequate effect effective effectivity efficacious efficacity efficacy efficiency efficient intend result

Similar Terms

efficacious efficient hard-hitting impelling impressive potent powerful rough-and-ready stiff strong telling trenchant useful utile valid valid

Synonym Network

effective

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.