unsafe

1.不安全的,危险的;2.不保险的,靠不住的

unreliable, unremarkable, unremitting, unrepeatable, unrepentant, unrepresentative, unrequited, unreserved, unreservedly, unresolved, unresponsive, unrest, unrestrained, unripe, unrivalled (US unrivaled), unroll, unruffled, unruliness, unruly, UNRWA, unsaid, unsalable, unsatisfactory, unsaturated, unsavoury (US unsavory), unsay, unscathed, unscented, unschooled, unscientific, unscramble, unscrew, unscripted, unscrupulous, unscrupulously, unscrupulousness, unseat, unseemliness, unseemly, unseen,