Word: oncost
Part of speech: Noun
Syllables: on
cost
Definition: The cost of upkeep, making and maintaining shafts, roads, pumping, etc.
Morphemes:
Affix: on-
Language: en
PoS: Prefix
Meaning: on, at, toward, upon.
Affix: cost
Language: en
PoS: Noun
Meaning: Amount of money, time, etc. that is required or used.