marginal
//ˈmɑːrdʒɪnəl//
Adjective
Of minor importance or significance; not central or essential.
The issue is marginal to the main discussion.
At or near the edge or margin; peripheral.
The factory was built in a marginal area of the city.
Very small in amount or degree; barely adequate or sufficient.
The company reported only a marginal profit this year.
Relating to or situated at the margin of a page or document.
The student made marginal notes in the textbook.
(Economics) Relating to goods or services produced and sold at the margin of profitability.
The company decided to stop producing marginal products that barely covered their costs.
Noun
(British politics) A parliamentary constituency where the incumbent has a small majority and could easily lose to another party.
The party is focusing its campaign efforts on key marginals.