oncost
nounEtymology From on- + cost, or from Middle English uncost (“additional expense”), from Middle Dutch oncost (“expenses, overhead”) (Modern Dutch onkost), equivalent to un- + cost. Cognate with German Unkosten (“expenses”).
1
Additional costs; extra expenses.
3
The cost of upkeep, making and maintaining shafts, roads, pumping, etc.
- Derived terms
- oncostman