ability
able
ableness
address
adept
adeptness
adequacy
adroitness
airmanship
applicability
artfulness
artisanship
artistry
availability
bravura
brilliance
caliber
capability
capable
capableness
capacity
cleverness
command
competence
competent
control
coordination
craft
craftsmanship
cunning
deftness
dexterity
dexterousness
dextrousness
diplomacy
effectiveness
effectual
efficacious
efficaciousness
efficacy
efficient
experience
expert
expertise
expertness
facility
faculty
finesse
effect
effective
effectivity
effector
effectuate
efficacity
efficiently
accuracy
discipline
economy
flexibility
health
integrity
performance
speed
stability
strength
success
deficiency
immunodeficiency
inefficiency
proficiency
self-sufficiency
sufficiency
wastefulness