Synonyms of borderline

1 Syllable

end

2 Syllables

wiggly, frontier, open, verge, clouded, verging, doubtful, frontiers, marchland, unclear, verged, edging, muzzier, muzzy

3 Syllables

boundary, unstable, ambiguous, marginal, tottery, unsure, unsettled, boundaries, dithering, tottering, lineament, untrusty, abuttals, precarious, lineation, uncertain, abuttal

4 Syllables

peripheral, perimetric, debatable, equivocal, problematic, dubitable, impugnable, perimeters, perimeter, undecided, ambivalent

5 Syllables

problematical, indecisive, unclassifiable, indefinite

6 Syllables

indeterminate