fringe
noun [ C ]
uk/frɪndʒ/ usthe outer or less important part of an area, group, or activity:
the northern/eastern/southwestern, etc. fringe The courthouse - on the northeastern fringe of downtown - will house district and bankruptcy courts.
the fringe of sth The share price soared and took the company to the fringe of the FTSE 100.
These activities are very much on the fringe of their global operation.
the extremist/radical/political fringe