borderline has definitions from the field of geography
1
[ adjective ] of questionable or minimal quality

Synonyms

marginal

Examples

"borderline grades" "marginal writing ability"

Used in print

(Harold Searles, "Schizophrenic Communication,"...)

A borderline schizophrenic young man told me that to him the various theoretical concepts about which he had been expounding , in a most articulate fashion , during session after session with me , were like great cubes of almost tangibly solid matter up in the air above him ; as he spoke I was reminded of the great bales of cargo which are swung , high in the air , from a docked steamship .

Related terms

minimal

2
[ noun ] (geography) a line that indicates a boundary
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