Answer: marginal

AnswerCrossword Clue
marginal(of taxation) Relating to increases in income
marginal(chiefly of costs or benefits) Relating to or resulting from small or unit changes
marginalOf secondary or minor importance; not central
marginalOf, relating to, or situated at the edge or margin of something
marginal(of a parliamentary seat) Having a small majority and therefore at risk in an election
marginalOf or written in the margin of a page
marginalOf or relating to water adjacent to the land's edge or coast
marginal(of a decision or distinction) Very narrow
marginalClose to the limit of profitability, esp. through difficulty of exploitation
marginalanything in or on a margin
MARGINALBarely adequate
MARGINALOn spring's fringe?
MARGINALAt the lower limit
MARGINALAt the fringe
MARGINALNot quite fly-by-night
MARGINALMinimal.
MARGINALBorderline.
MARGINALBarely covering production costs.
MARGINALJust adequate
MARGINALOn the fringe