marginal

Adjective

• producing at a rate that barely covers production costs
  • marginal industries
    

• just barely adequate or within a lower limit
  • a bare majority
    
  • a marginal victory
    

• of questionable or minimal quality
  • borderline grades
    
  • marginal writing ability
    

• at or constituting a border or edge
  • the marginal strip of beach
    

Related words

• Synonyms: 
  bare(a) , borderline , fringy