the process or activity of providing an establishment, machine, person, etc., with necessary or proper maintenance, repairs, support, or the like

The machine's faulty operation shows that no one has attended to its upkeep.

the total sum of the costs or expenses for this.

noun

neglect , negligence

noun

budget , conservation , costs , expenditure , expenses , keep , outlay , overhead , preservation , price , repair , running , subsistence , support , sustenance , sustentation , alimentation , alimony , bread , bread and butter , livelihood , maintenance , care , conditioning