marginal Synonyms

borderline insignificant petty peripheral fringy secondary minimal subordinate minor trifling questionable small dubious doubtful side ancillary slight bare minute tiny tenuous trivial uncertain thin tertiary skirting slender tangential supporting supplementary slim subsidiary uncommon unstable verging riverine hardscrabble on the edge unclassifiable unreached along a coast low-ranking marginally adequate barely sufficient just sufficient substandard touch-and-go weak unimportant incidental