Synonym word of Efficacious:

active,adequate,capable,competent,effective,effectual,energetic,influential,operative,potent,powerful, puissant, serviceable,strong,successful,useful,virtuous


Antonyms:  A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Popular
Synonyms:  A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Popular