vouchsafe
/vaʊtʃˈseɪf/verb
with two objs(常作be vouchsafed)
1- give or grant (something) to (someone) in a gracious or condescending manner惠赐, 赐予：
it is a blessing vouchsafed him by heaven.
那是上天赐予他的福。
1.1
- with obj. reveal or disclose (information)透露（信息）：
you'd never vouchsafed that interesting titbit before.
你以前可从来没有说过那个趣闻。
词源
Middle English: originally as the phrase vouch something safe on someone， i.e. 'warrant the secure conferment of (something on someone)'.