hesitation (n.) Look up hesitation at Dictionary.com
c.1400, from Old French hesitacion or directly from Latin haesitationem (nominative haesitatio) "a hesitation, stammering," figuratively "irresolution, uncertainty," from haesitare "stick fast, remain fixed; stammer in speech," figuratively "hesitate, be irresolute, be at a loss, be undecided," frequentative of haerere "stick, cling," from PIE *ghais-e (cf. Lithuanian gaistu "to delay, tarry"), from root *ghais- "to adhere; hesitate."