Synonyms to effective

able, adapted, adequate, adjusted, alert, au fait, brainy, brilliant, capable, checked out, clever, competent, effectual, efficacious, efficient, enigmatic, enterprising, equal to, expert, fit, fitted, fitted for, go-ahead, good, incalculable, incognizable, intelligent, journeyman, keen, mysterious, productive, proficient, proper, puzzling, qualified, sealed, sharp, skilled, skillful, smart, strange, suited, unapparent, unapprehended, unascertained, unbeknown, uncharted, unclassified, undisclosed, undiscoverable, undiscovered, undivulged, unexplained, unexplored, unexposed, unfamiliar, unfathomed, unheard, unheard-of, unidentified, uninvestigated, unknowable, unknown, unperceived, unplumbed, unrevealed, unsuspected, untouched, up to, up to snuff, up-and-coming, virgin, well-fitted, well-qualified, well-suited, wicked, worthy, acid, DET, DMT, Foamite, LSD, Mary Jane, STP, THC, acerb, acerbate, acerbic, acerbity, acetic, acetose, acetous, acetylsalicylic acid, acidic, acidity, acidulant, acidulated, acidulent, acidulous, acidulousness, acrid, acrimonious, acrimony, actual cautery, agent, alkali, alka