1. (a.) Of or pertaining to a margin.

2. (a.) Written or printed in the margin; as, a marginal note or gloss.

bordering borderline boundary bounding coastal determinant determinative determining disputable doubtful dubious extreme fringing frontier inferior infinitesimal insignificant limbic liminal limit limiting littoral low-priority minimal negligible no great shakes of no account of no consequence of no matter of no significance on the edge questionable rimming secondary skirting slight small terminal threshold tiny unimportant