marginal

adjectives

at or constituting a border or edge
"the marginal strip of beach"
fringy, marginal
is derived from
margin
is derived from
marginality
of questionable or minimal quality
"borderline grades"; "marginal writing ability"
borderline, marginal
just barely adequate or within a lower limit
"a bare majority"; "a marginal victory"
bare, marginal
producing at a rate that barely covers production costs
"marginal industries"
marginal
is similar to
producing little or no profit or gain
"deposits abandoned by mining companies as unprofitable"
unprofitable