efficacious

adjective

Key Types & categories Parts & wholes Related & opposite

Line style: core relation; instance, member or derived; substance, domain or see-also

Direction: arrow points to the broader concept; Click any word to expand it.

Senses

marked by qualities giving the power to produce an intended effect

written propaganda is less efficacious than the habits and prejudices...of the readers

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

an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation

Sense	Relation	Group	Word
1	also see	Related & opposite	effective
1	antonym	Related & opposite	inefficacious
1	attribute	Related & opposite	efficacy
1	derivation	Related & opposite	efficacy
1	similar to	Related & opposite	effective
2	also see	Related & opposite	efficacious
2	also see	Related & opposite	efficient
2	also see	Related & opposite	potent
2	also see	Related & opposite	powerful
2	also see	Related & opposite	useful
2	antonym	Related & opposite	ineffective
2	attribute	Related & opposite	effectiveness
2	derivation	Related & opposite	effectiveness
2	derivation	Related & opposite	efficacy
2	derivation	Related & opposite	effect
2	similar to	Related & opposite	hard-hitting
2	similar to	Related & opposite	impelling
2	similar to	Related & opposite	impressive
2	similar to	Related & opposite	rough-and-ready