rustiness

nouns

the condition of being coated or clogged with rust
is derived from
is a type of (narrower)
a state at a particular time
"a condition (or state) of disrepair"; "the current status of the arms negotiations"
ineptitude or awkwardness as a consequence of age or lack of practice
"his rustiness showed when he was asked to speed up"
is derived from
is a type of (narrower)
unskillfulness resulting from a lack of training