readiness, robustness, ability, severeness, lustiness, rigor, grimness, energy, capability, hardness, rigorousness, hardiness, harshness, inclemency, talent, stiffness, hardship, dexterity, validity, rigour, expertness, aptitude, validness, asperity, cleverness, capacity, susceptibility, qualification, skill, efficiency, efficacy, rigourousness, competency, severity
authority (part of speech: noun)
mightiness, prepotency, charge, seniority, steam, sovereignty, domination, superiority, force, stature, influence, potency, authority, privilege, control, mandate, might, empowerment, prerogative, commission, powerfulness, clout, credential, birthright, faculty, office, command, primacy, puissance, sway, precedence, right, license, entitlement, punch, power, enfranchisement, rank, strength, prestige, purview, title, kingship
intelligence (part of speech: noun)
- The squire's power of vituperation was notorious: he could be more than a match for roadside navvies and predatory tramps in cogency of epithet. - "The Adventures of Harry Richmond, Complete", George Meredith Last Updated: March 7, 2009.
- Dorothy asked, with feminine cogency. - "Hidden Gold", Wilder Anthony.
- In concluding this portion of my discussion of the problem of Mars, I wish to call attention to the fact that my argument, founded upon a comparison of the physical conditions of the earth and moon with those of Mars, is dependent upon a small number of generally admitted scientific facts; while the conclusions drawn from those facts are simple and direct, requiring no mathematical knowledge to follow them, or to appreciate their weight and cogency. - "Is Mars Habitable?", Alfred Russel Wallace.