Efficaciousness is the quality of being able to produce a desired result or effect. It is related to the crossword solutions of CAPABILITY, EFFICACY, ADEQUACY, COMPETENCE, ENERGY, POWER, productivity, CAPACITY, EFFICIENCY, MIGHT, and ABILITY. CAPABILITY refers to the potential to do something, while EFFICACY is the ABILITY to produce a desired result. ADEQUACY is the quality of being sufficient for a particular purpose, while COMPETENCE is the ABILITY to do something successfully. ENERGY is the CAPACITY to do work, while POWER is the ABILITY to act or produce an effect. PRODUCTIVENESS is the quality of producing something useful, while CAPACITY is the ABILITY to contain or hold something. EFFICIENCY is the ABILITY to do something with a minimum amount of wasted effort or expense, while MIGHT is the strength or POWER to do something. Finally, ABILITY is the CAPACITY to do something. All of these terms are related to the concept of efficaciousness, which is the quality of being able to produce a desired result or effect.