efficacious 11 Associations

effective (similar term) effective (related term) effectual (related term) efficacious (related term) inefficacious (antonym)

inefficacious 13 Associations

ineffective (related term) uneffective (related term) ineffectual (related term) efficacious (antonym)

inefficient 11 Associations

uneconomical (similar term) wasteful (similar term) incompetent (related term) ineffective (related term) uneffective (related term) ineffectual (related term) efficient (antonym)

potent 6 Associations

strong stiff equipotent (similar term) multipotent (similar term) effective (related term) effectual (related term) efficacious (related term)

stiff 5 Associations

potent strong equipotent (similar term) multipotent (similar term) effective (related term) effectual (related term) efficacious (related term)

strong 6 Associations

potent stiff equipotent (similar term) multipotent (similar term) effective (related term) effectual (related term) efficacious (related term)