(n.) The quality of being cogent; power of compelling conviction; conclusiveness; force.

acuity acumen acuteness advantageousness agreeableness amperage apperception armipotence astuteness auspiciousness authoritativeness authority bearing beef beneficialness benevolence benignity black power brute force charge charisma class clout cogence compulsion concern connection desert dint discernment drive duress effect effectiveness effectuality energy excellence expedience fairness farseeingness farsightedness favorableness fineness first-rateness flower power force force majeure forcefulness foresight foresightedness full blast full force good reason good reasoning goodliness goodness grace healthiness helpfulness incisiveness influence insight ironclad reasoning justness kindness knockdown argument longheadedness longsightedness main force main strength mana merit might might and main mightiness moxie muscle power niceness penetration perception perceptiveness percipience perspicaciousness perspicacity perspicuity perspicuousness pertinence pizzazz pleasantness poop potence potency potentiality power power pack power structure power struggle powerfulness prepotency productiveness productivity profitableness providence puissance pull punch push quality relevance rewardingness right thinking sagaciousness sagacity sensibility sinew skillfulness solidity sound evidence sound reasoning soundness steam strength strong argument strong arm strong point substantiality superiority superpower trenchancy usefulness validity value vehemence vigor vim virility virtue virtuousness virulence vitality wattage weight wholeness worth