dependable

[dɪˈpɛndəbəɫ]noun

A person or thing that can always be relied on.

Example sentence

“Whenever the schedule falls apart, Maria is the office dependable.”

Far more familiar as an adjective: 'a dependable friend', 'a dependable car'. The noun use is rare.

Related words

depictTo show or portray something through pictures, words, sounds, or other forms.departureThe act of leaving, or a person or thing that has left.depleteTo drain or empty the vessels or fluids of the body, as through bloodletting or the effects of medicine.departmentOne of the sections into which a company, government, or other organization is divided.deplorableSo bad or shameful that it deserves strong disapproval.departTo go away from a place; to set off.