borderline Synonyms

border boundary line mete marginal delimitation perimetric verge watershed unsettled undecided confines uncertain ultra threshold territorial separatrix selvage questionable problematic precarious periphery bounds property line unsure piratically stripped down unclassifiable untrusty wiggly limits border line unclear iffy borderland marchland demarcation line limbic dividing line marginality offside liminal borders perimeter moot dubious doubtful division divide demarcation debatable