This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The characteristic of being dependable; the ability to be depended upon.

n. the trait of being dependable or reliable.

n. the quality of being dependable or reliable

"Nuclear plants have achieved a utilization factor of 90 percent because they can operate 24 hours a day year-round regardless of weather, whereas dependability is a major consideration in the use of wind and solar energy for generation of electricity."

responsibleness    responsibility   

infallibility    solidness    reproducibility    duplicability    solidity   

dependableness    reliability    reliableness   

accessibility    advisability    availability    believability    collectibility    comparability    convertibility    credibility    culpability    deniability   

timeliness    resiliency    trustworthiness    maintainability    disinhibition    operability    cohesiveness    scalability    serviceability    reproducibility