Dependability

n.capable, calmprofessional

What it means

The quality of being consistently ready, reliable, and worthy of trust.

Reach for it when praising follow-through that others can safely plan around

The ferry crew's dependability keeps island deliveries on schedule.

everyday
consistency
when stable behavior or quality over repeated occasions is central
not when Consistency can preserve a bad habit and does not itself imply usefulness.
warm
steadiness
when calm, even performance under pressure earns praise
not when Steadiness does not guarantee that promises are kept.
professional
reliability
when consistent performance can be observed or measured
not when Reliability can describe a machine and lacks the personal trust in dependability.
professional
responsibility
when ownership of duties and consequences is the point
not when Responsibility names an obligation as well as a virtue, while dependability is proved by results.
formal
trustworthiness
when honesty and safe reliance on character matter
not when Someone can be trustworthy with secrets yet unavailable for practical duties.
literary
constancy
when faithful continuation over a long period deserves emphasis
not when Constancy may sound romantic or old-fashioned in a performance review.

proven dependability
The pump's proven dependability justified using it at the remote station.
value dependability
Parents value dependability in the drivers who run the school route.
dependability under pressure
Her dependability under pressure made her the natural shift leader.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.