usefulness (n.)

• account
• advantage
• advantageousness
• advisability
• agreeableness
• applicability
• appropriateness
• auspiciousness
• availability
• benefit
• benevolence
• benignity
• class
• cogency
• convenience
• decency
• desert
• desirability
• effectiveness
• efficacy
• efficiency
• excellence
• expedience
• expediency
• fairness
• favorableness
• feasibility
• fineness
• fitness
• fittingness
• fruitfulness
• functionality
• gain
• goodness
• grace
• healthiness
• help
• helpfulness
• kindness
• merit
• niceness
• operability
• opportuneness
• percentage
• pleasantness
• point
• practicability
• practicality
• profit
• profitability
• profitableness
• propriety
• prudence
• purpose
• purposefulness
• quality
• relevance
• rightness
• seasonableness
• seemliness
• service
• serviceability
• skillfulness
• soundness
• suitability
• superiority
• timeliness
• usability
• use
• utility
• validity
• value
• virtue
• virtuousness
• wholeness
• wisdom
• worth
• worthwhileness