The word attenuated refers to something that has been weakened, thinned out, or reduced in force, intensity, or value. Therefore, the antonyms for more attenuated would be potential, concentration, strength, power or vigor. These words describe an increased capacity, density, or vitality of a particular thing or concept. An opposing word to attenuated could be intense, strong, powerful, or dense. These words suggest an increased force or concentration of something, whereas attenuated refers to a weakened or diluted version of it. Therefore, depending on the context in which it is used, the antonyms for attenuated may vary, but they all refer to an opposing state of solidity or strength.