GMAT Vocabulary Flash Cards @ englishpdf.com and englishteststore.com File 638 surcharge (n) An additional amount charged surety (n) Security for payment or performance surfeit (v) To feed to fullness or to satiety surmise (v) To conjecture surmount (v) To overcome by force of will surpass (v) go beyond; out surreptitious (adj) Clandestine surrogate (n) One who or that which is substituted for or appointed to act in place of another