English dictionary

effectual

/I/'f/E/k/tS//u//@/l/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

adjective

producing or capable of producing an intended result or having a striking effect

adj.all

Examples
His complaint proved to be effectual in bringing action.

Synonyms effective efficacious

Antonyms ineffective ineffectual uneffective

Source: WordNet 3.0
Producing, or having adequate power or force to produce, an intended effect; adequate; efficient; operative; decisive.

adjective

Source: webster1913